2.8 -> 3.0 in specs

147 files changed, 199 insertions, 201 deletions

diff --git a/spec/ruby/core/binding/eval_spec.rb b/spec/ruby/core/binding/eval_spec.rb
index 224bce4c33..b36bec799e 100644
--- a/spec/ruby/core/binding/eval_spec.rb
+++ b/spec/ruby/core/binding/eval_spec.rb
@@ -23,7 +23,7 @@ describe "Binding#eval" do
     bind2.local_variables.should == []
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "inherits __LINE__ from the enclosing scope" do
       obj = BindingSpecs::Demo.new(1)
       bind = obj.get_binding
@@ -50,7 +50,7 @@ describe "Binding#eval" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "starts with line 1 if single argument is given" do
       obj = BindingSpecs::Demo.new(1)
       bind = obj.get_binding
@@ -89,7 +89,7 @@ describe "Binding#eval" do
     bind.eval("#foo\n__LINE__", "(test)", 88).should == 89
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "inherits __FILE__ from the enclosing scope" do
       obj = BindingSpecs::Demo.new(1)
       bind = obj.get_binding
@@ -97,7 +97,7 @@ describe "Binding#eval" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "Uses (eval) as __FILE__ if single argument given" do
       obj = BindingSpecs::Demo.new(1)
       bind = obj.get_binding
diff --git a/spec/ruby/core/env/delete_spec.rb b/spec/ruby/core/env/delete_spec.rb
index 36a1f2624b..5e7891f74d 100644
--- a/spec/ruby/core/env/delete_spec.rb
+++ b/spec/ruby/core/env/delete_spec.rb
@@ -30,7 +30,7 @@ describe "ENV.delete" do
     ScratchPad.recorded.should == "foo"
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "returns the result of given block if the named environment variable does not exist" do
       ENV.delete("foo")
       ENV.delete("foo") { |name| "bar" }.should == "bar"
diff --git a/spec/ruby/core/exception/no_method_error_spec.rb b/spec/ruby/core/exception/no_method_error_spec.rb
index b7ee5434fd..570ffc47b1 100644
--- a/spec/ruby/core/exception/no_method_error_spec.rb
+++ b/spec/ruby/core/exception/no_method_error_spec.rb
@@ -104,7 +104,7 @@ describe "NoMethodError#message" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "uses #name to display the receiver if it is a class or a module" do
       klass = Class.new { def self.name; "MyClass"; end }
       begin
diff --git a/spec/ruby/core/hash/shared/each.rb b/spec/ruby/core/hash/shared/each.rb
index 5e88a35445..e0c0a949ca 100644
--- a/spec/ruby/core/hash/shared/each.rb
+++ b/spec/ruby/core/hash/shared/each.rb
@@ -21,7 +21,7 @@ describe :hash_each, shared: true do
     ary.sort.should == ["a", "b", "c"]
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "yields 2 values and not an Array of 2 elements when given a callable of arity 2" do
       obj = Object.new
       def obj.foo(key, value)
@@ -38,7 +38,7 @@ describe :hash_each, shared: true do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "yields an Array of 2 elements when given a callable of arity 2" do
       obj = Object.new
       def obj.foo(key, value)
diff --git a/spec/ruby/core/hash/to_proc_spec.rb b/spec/ruby/core/hash/to_proc_spec.rb
index 73c96bdf08..8f5d21beb5 100644
--- a/spec/ruby/core/hash/to_proc_spec.rb
+++ b/spec/ruby/core/hash/to_proc_spec.rb
@@ -19,13 +19,13 @@ describe "Hash#to_proc" do
       @proc = @hash.to_proc
     end
 
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       it "is not a lambda" do
         @proc.should_not.lambda?
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       it "is a lambda" do
         @proc.should.lambda?
       end
diff --git a/spec/ruby/core/io/shared/new.rb b/spec/ruby/core/io/shared/new.rb
index 87f3001862..75c532053f 100644
--- a/spec/ruby/core/io/shared/new.rb
+++ b/spec/ruby/core/io/shared/new.rb
@@ -197,7 +197,7 @@ describe :io_new, shared: true do
     @io.internal_encoding.to_s.should == 'IBM866'
   end
 
-  ruby_version_is ''...'2.8' do
+  ruby_version_is ''...'3.0' do
     it "accepts nil options" do
       @io = suppress_keyword_warning do
         IO.send(@method, @fd, 'w', nil)
@@ -206,7 +206,7 @@ describe :io_new, shared: true do
     end
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     it "raises ArgumentError for nil options" do
       -> {
         IO.send(@method, @fd, 'w', nil)
@@ -382,7 +382,7 @@ describe :io_new_errors, shared: true do
     }.should raise_error(ArgumentError)
   end
 
-  ruby_version_is ''...'2.8' do
+  ruby_version_is ''...'3.0' do
     it "raises TypeError if passed a hash for mode and nil for options" do
       -> {
         suppress_keyword_warning do
@@ -392,7 +392,7 @@ describe :io_new_errors, shared: true do
     end
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     it "raises ArgumentError if passed a hash for mode and nil for options" do
       -> {
         @io = IO.send(@method, @fd, {mode: 'w'}, nil)
diff --git a/spec/ruby/core/io/ungetc_spec.rb b/spec/ruby/core/io/ungetc_spec.rb
index dc31c3743a..a05d80ee9c 100644
--- a/spec/ruby/core/io/ungetc_spec.rb
+++ b/spec/ruby/core/io/ungetc_spec.rb
@@ -103,7 +103,7 @@ describe "IO#ungetc" do
     -> { @io.sysread(1) }.should raise_error(IOError)
   end
 
-  ruby_version_is "0"..."2.8" do
+  ruby_version_is "0"..."3.0" do
     it "does not affect the stream and returns nil when passed nil" do
       @io.getc.should == ?V
       @io.ungetc(nil)
@@ -111,7 +111,7 @@ describe "IO#ungetc" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "raises TypeError if passed nil" do
       @io.getc.should == ?V
       proc{@io.ungetc(nil)}.should raise_error(TypeError)
diff --git a/spec/ruby/core/kernel/__dir___spec.rb b/spec/ruby/core/kernel/__dir___spec.rb
index 0686b31e97..324792a408 100644
--- a/spec/ruby/core/kernel/__dir___spec.rb
+++ b/spec/ruby/core/kernel/__dir___spec.rb
@@ -19,7 +19,7 @@ describe "Kernel#__dir__" do
     end
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     context "when used in eval with top level binding" do
       it "returns the real name of the directory containing the currently-executing file" do
         eval("__dir__", binding).should == File.realpath(File.dirname(__FILE__))
@@ -27,7 +27,7 @@ describe "Kernel#__dir__" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     context "when used in eval with top level binding" do
       it "returns nil" do
         eval("__dir__", binding).should == nil
diff --git a/spec/ruby/core/kernel/clone_spec.rb b/spec/ruby/core/kernel/clone_spec.rb
index 6aeb57f55b..c18af4a490 100644
--- a/spec/ruby/core/kernel/clone_spec.rb
+++ b/spec/ruby/core/kernel/clone_spec.rb
@@ -37,7 +37,7 @@ describe "Kernel#clone" do
     o3.should.frozen?
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     it 'takes an freeze: true option to frozen copy' do
       @obj.clone(freeze: true).should.frozen?
       @obj.freeze
diff --git a/spec/ruby/core/kernel/eval_spec.rb b/spec/ruby/core/kernel/eval_spec.rb
index 783009ac01..c53e51e430 100644
--- a/spec/ruby/core/kernel/eval_spec.rb
+++ b/spec/ruby/core/kernel/eval_spec.rb
@@ -159,7 +159,7 @@ describe "Kernel#eval" do
     end
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "uses the filename of the binding if none is provided" do
       eval("__FILE__").should == "(eval)"
       suppress_warning {eval("__FILE__", binding)}.should == __FILE__
@@ -170,7 +170,7 @@ describe "Kernel#eval" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "uses (eval) filename if none is provided" do
       eval("__FILE__").should == "(eval)"
       eval("__FILE__", binding).should == "(eval)"
diff --git a/spec/ruby/core/kernel/iterator_spec.rb b/spec/ruby/core/kernel/iterator_spec.rb
index a2811dc569..3fe8317f26 100644
--- a/spec/ruby/core/kernel/iterator_spec.rb
+++ b/spec/ruby/core/kernel/iterator_spec.rb
@@ -1,7 +1,7 @@
 require_relative '../../spec_helper'
 require_relative 'fixtures/classes'
 
-ruby_version_is ""..."2.8" do
+ruby_version_is ""..."3.0" do
   describe "Kernel#iterator?" do
     it "is a private method" do
       Kernel.should have_private_instance_method(:iterator?)
diff --git a/spec/ruby/core/kernel/proc_spec.rb b/spec/ruby/core/kernel/proc_spec.rb
index 7b4493dcc4..dfe178420b 100644
--- a/spec/ruby/core/kernel/proc_spec.rb
+++ b/spec/ruby/core/kernel/proc_spec.rb
@@ -48,7 +48,7 @@ describe "Kernel#proc" do
     end
   end
 
-  ruby_version_is "2.7"..."2.8" do
+  ruby_version_is "2.7"..."3.0" do
     it "can be created when called with no block" do
       -> {
         some_method { "hello" }
@@ -56,7 +56,7 @@ describe "Kernel#proc" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "raises an ArgumentError when passed no block" do
       -> {
         some_method { "hello" }
diff --git a/spec/ruby/core/kernel/shared/require.rb b/spec/ruby/core/kernel/shared/require.rb
index 28fdb5e451..0e7f8ba665 100644
--- a/spec/ruby/core/kernel/shared/require.rb
+++ b/spec/ruby/core/kernel/shared/require.rb
@@ -243,7 +243,7 @@ describe :kernel_require, shared: true do
       ScratchPad.recorded.should == [:loaded]
     end
 
-    ruby_bug "#16926", "2.7"..."2.8" do
+    ruby_bug "#16926", "2.7"..."3.0" do
       it "does not load a feature twice when $LOAD_PATH has been modified" do
         $LOAD_PATH.replace [CODE_LOADING_DIR]
         @object.require("load_fixture").should be_true
diff --git a/spec/ruby/core/method/compose_spec.rb b/spec/ruby/core/method/compose_spec.rb
index 0e2a0eeea2..0743dd4f8d 100644
--- a/spec/ruby/core/method/compose_spec.rb
+++ b/spec/ruby/core/method/compose_spec.rb
@@ -39,8 +39,8 @@ ruby_version_is "2.6" do
         double = proc { |x| x + x }
 
         (pow_2 << double).is_a?(Proc).should == true
-        ruby_version_is(''...'2.8') { (pow_2 << double).should.lambda? }
-        ruby_version_is('2.8') { (pow_2 << double).should_not.lambda? }
+        ruby_version_is(''...'3.0') { (pow_2 << double).should.lambda? }
+        ruby_version_is('3.0') { (pow_2 << double).should_not.lambda? }
       end
 
       it "may accept multiple arguments" do
diff --git a/spec/ruby/core/method/shared/to_s.rb b/spec/ruby/core/method/shared/to_s.rb
index 7666322936..0c0edc2f8c 100644
--- a/spec/ruby/core/method/shared/to_s.rb
+++ b/spec/ruby/core/method/shared/to_s.rb
@@ -32,7 +32,7 @@ describe :method_to_s, shared: true do
     @string.should =~ /MethodSpecs::MySub/
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     it "returns a String containing the Module containing the method if object has a singleton class but method is not defined in the singleton class" do
       obj = MethodSpecs::MySub.new
       obj.singleton_class
diff --git a/spec/ruby/core/module/prepend_spec.rb b/spec/ruby/core/module/prepend_spec.rb
index 1905021cf7..a501b5e50c 100644
--- a/spec/ruby/core/module/prepend_spec.rb
+++ b/spec/ruby/core/module/prepend_spec.rb
@@ -128,7 +128,7 @@ describe "Module#prepend" do
     c.dup.new.should be_kind_of(m)
   end
 
-  ruby_version_is '0'...'2.8' do
+  ruby_version_is '0'...'3.0' do
     it "keeps the module in the chain when dupping an intermediate module" do
       m1 = Module.new { def calc(x) x end }
       m2 = Module.new { prepend(m1) }
@@ -143,7 +143,7 @@ describe "Module#prepend" do
     end
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     it "uses only new module when dupping the module" do
       m1 = Module.new { def calc(x) x end }
       m2 = Module.new { prepend(m1) }
diff --git a/spec/ruby/core/module/refine_spec.rb b/spec/ruby/core/module/refine_spec.rb
index ebb7111d82..cb50fcbce6 100644
--- a/spec/ruby/core/module/refine_spec.rb
+++ b/spec/ruby/core/module/refine_spec.rb
@@ -980,7 +980,7 @@ describe "Module#refine" do
       result.should == [:B, :A, :LAST, :C]
     end
 
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       it "looks in the lexical scope refinements before other active refinements" do
         refined_class = ModuleSpecs.build_refined_class(for_super: true)
 
@@ -1016,7 +1016,7 @@ describe "Module#refine" do
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       # https://bugs.ruby-lang.org/issues/17007
       it "does not look in the lexical scope refinements before other active refinements" do
         refined_class = ModuleSpecs.build_refined_class(for_super: true)
diff --git a/spec/ruby/core/mutex/owned_spec.rb b/spec/ruby/core/mutex/owned_spec.rb
index f881622965..1f843cd576 100644
--- a/spec/ruby/core/mutex/owned_spec.rb
+++ b/spec/ruby/core/mutex/owned_spec.rb
@@ -41,7 +41,7 @@ describe "Mutex#owned?" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "is held per Fiber" do
       m = Mutex.new
       m.lock
diff --git a/spec/ruby/core/proc/compose_spec.rb b/spec/ruby/core/proc/compose_spec.rb
index efdbdeacf4..285e96192b 100644
--- a/spec/ruby/core/proc/compose_spec.rb
+++ b/spec/ruby/core/proc/compose_spec.rb
@@ -38,7 +38,7 @@ ruby_version_is "2.6" do
         (f << g).should_not.lambda?
       end
 
-      ruby_version_is(''...'2.8') do
+      ruby_version_is(''...'3.0') do
         it "is a Proc when other is lambda" do
           f = proc { |x| x * x }
           g = -> x { x + x }
@@ -56,7 +56,7 @@ ruby_version_is "2.6" do
         end
       end
 
-      ruby_version_is('2.8') do
+      ruby_version_is('3.0') do
         it "is a lambda when parameter is lambda" do
           f = -> x { x * x }
           g = proc { |x| x + x }
diff --git a/spec/ruby/core/proc/eql_spec.rb b/spec/ruby/core/proc/eql_spec.rb
index d95e890c29..5f38af72d9 100644
--- a/spec/ruby/core/proc/eql_spec.rb
+++ b/spec/ruby/core/proc/eql_spec.rb
@@ -2,11 +2,11 @@ require_relative '../../spec_helper'
 require_relative 'shared/equal'
 
 describe "Proc#eql?" do
-  ruby_version_is "0"..."2.8" do
+  ruby_version_is "0"..."3.0" do
     it_behaves_like :proc_equal_undefined, :eql?
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it_behaves_like :proc_equal, :eql?
   end
 end
diff --git a/spec/ruby/core/proc/equal_value_spec.rb b/spec/ruby/core/proc/equal_value_spec.rb
index fb465992e9..4c336331d7 100644
--- a/spec/ruby/core/proc/equal_value_spec.rb
+++ b/spec/ruby/core/proc/equal_value_spec.rb
@@ -2,11 +2,11 @@ require_relative '../../spec_helper'
 require_relative 'shared/equal'
 
 describe "Proc#==" do
-  ruby_version_is "0"..."2.8" do
+  ruby_version_is "0"..."3.0" do
     it_behaves_like :proc_equal_undefined, :==
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it_behaves_like :proc_equal, :==
   end
 end
diff --git a/spec/ruby/core/proc/new_spec.rb b/spec/ruby/core/proc/new_spec.rb
index 0a6247239f..6d5eb67a4b 100644
--- a/spec/ruby/core/proc/new_spec.rb
+++ b/spec/ruby/core/proc/new_spec.rb
@@ -203,7 +203,7 @@ describe "Proc.new without a block" do
     end
   end
 
-  ruby_version_is "2.7"..."2.8" do
+  ruby_version_is "2.7"..."3.0" do
     it "can be created if invoked from within a method with a block" do
       -> { ProcSpecs.new_proc_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end
@@ -224,7 +224,7 @@ describe "Proc.new without a block" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "raises an ArgumentError when passed no block" do
       def some_method
         Proc.new
diff --git a/spec/ruby/core/regexp/initialize_spec.rb b/spec/ruby/core/regexp/initialize_spec.rb
index 28255ad60f..772a233e82 100644
--- a/spec/ruby/core/regexp/initialize_spec.rb
+++ b/spec/ruby/core/regexp/initialize_spec.rb
@@ -5,13 +5,13 @@ describe "Regexp#initialize" do
     Regexp.should have_private_method(:initialize)
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "raises a SecurityError on a Regexp literal" do
       -> { //.send(:initialize, "") }.should raise_error(SecurityError)
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "raises a FrozenError on a Regexp literal" do
       -> { //.send(:initialize, "") }.should raise_error(FrozenError)
     end
diff --git a/spec/ruby/core/symbol/to_proc_spec.rb b/spec/ruby/core/symbol/to_proc_spec.rb
index 32f996d63c..e9261e6cdf 100644
--- a/spec/ruby/core/symbol/to_proc_spec.rb
+++ b/spec/ruby/core/symbol/to_proc_spec.rb
@@ -12,7 +12,7 @@ describe "Symbol#to_proc" do
     :to_s.to_proc.call(obj).should == "Received #to_s"
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "returns a Proc with #lambda? false" do
       pr = :to_s.to_proc
       pr.should_not.lambda?
@@ -29,7 +29,7 @@ describe "Symbol#to_proc" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "returns a Proc with #lambda? true" do
       pr = :to_s.to_proc
       pr.should.lambda?
diff --git a/spec/ruby/core/thread/exclusive_spec.rb b/spec/ruby/core/thread/exclusive_spec.rb
index 8c2bc0e82a..37c4b19d1a 100644
--- a/spec/ruby/core/thread/exclusive_spec.rb
+++ b/spec/ruby/core/thread/exclusive_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   describe "Thread.exclusive" do
     before :each do
       ScratchPad.clear
diff --git a/spec/ruby/core/time/new_spec.rb b/spec/ruby/core/time/new_spec.rb
index 1a2f93e2ef..a4bb5b362c 100644
--- a/spec/ruby/core/time/new_spec.rb
+++ b/spec/ruby/core/time/new_spec.rb
@@ -129,7 +129,7 @@ ruby_version_is "2.6" do
 
       time.zone.should == zone
       time.utc_offset.should == 5*3600+30*60
-      ruby_version_is "2.8" do
+      ruby_version_is "3.0" do
         time.wday.should == 6
         time.yday.should == 1
       end
diff --git a/spec/ruby/core/tracepoint/enable_spec.rb b/spec/ruby/core/tracepoint/enable_spec.rb
index 13c7b82b54..50fded90e4 100644
--- a/spec/ruby/core/tracepoint/enable_spec.rb
+++ b/spec/ruby/core/tracepoint/enable_spec.rb
@@ -124,13 +124,11 @@ describe 'TracePoint#enable' do
 
   describe "when nested" do
     before do
-      ruby_version_is ""..."2.8" do
-        # Old behavior for Ruby < 2.8
+      ruby_version_is ""..."3.0" do
         @path_prefix = '@'
       end
 
-      ruby_version_is "2.8" do
-        # New behavior for Ruby >= 2.8
+      ruby_version_is "3.0" do
         @path_prefix = ' '
       end
     end
diff --git a/spec/ruby/core/tracepoint/inspect_spec.rb b/spec/ruby/core/tracepoint/inspect_spec.rb
index 80de965337..34a152180e 100644
--- a/spec/ruby/core/tracepoint/inspect_spec.rb
+++ b/spec/ruby/core/tracepoint/inspect_spec.rb
@@ -3,12 +3,12 @@ require_relative 'fixtures/classes'
 
 describe 'TracePoint#inspect' do
   before do
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       # Old behavior for Ruby < 2.8
       @path_prefix = '@'
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       # New behavior for Ruby >= 2.8
       @path_prefix = ' '
     end
diff --git a/spec/ruby/language/block_spec.rb b/spec/ruby/language/block_spec.rb
index 8a02f61925..45a8ec5f9a 100644
--- a/spec/ruby/language/block_spec.rb
+++ b/spec/ruby/language/block_spec.rb
@@ -44,7 +44,7 @@ describe "A block yielded a single" do
       m([1, 2]) { |a, **k| [a, k] }.should == [1, {}]
     end
 
-    ruby_version_is ''..."2.8" do
+    ruby_version_is ''..."3.0" do
       it "assigns elements to mixed argument types" do
         suppress_keyword_warning do
           result = m([1, 2, 3, {x: 9}]) { |a, b=5, *c, d, e: 2, **k| [a, b, c, d, e, k] }
@@ -70,7 +70,7 @@ describe "A block yielded a single" do
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       it "assigns elements to mixed argument types" do
         result = m([1, 2, 3, {x: 9}]) { |a, b=5, *c, d, e: 2, **k| [a, b, c, d, e, k] }
         result.should == [1, 2, [3], {x: 9}, 2, {}]
@@ -102,7 +102,7 @@ describe "A block yielded a single" do
       end
     end
 
-    ruby_version_is "2.7"...'2.8' do
+    ruby_version_is "2.7"...'3.0' do
       it "calls #to_hash on the argument but ignores result when optional argument and keyword argument accepted" do
         obj = mock("coerce block keyword arguments")
         obj.should_receive(:to_hash).and_return({"a" => 1, "b" => 2})
@@ -112,7 +112,7 @@ describe "A block yielded a single" do
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       it "does not call #to_hash on the argument when optional argument and keyword argument accepted and does not autosplat" do
         obj = mock("coerce block keyword arguments")
         obj.should_not_receive(:to_hash)
@@ -123,7 +123,7 @@ describe "A block yielded a single" do
     end
 
     describe "when non-symbol keys are in a keyword arguments Hash" do
-      ruby_version_is ""..."2.8" do
+      ruby_version_is ""..."3.0" do
         it "separates non-symbol keys and symbol keys" do
           suppress_keyword_warning do
             result = m(["a" => 10, b: 2]) { |a=nil, **b| [a, b] }
@@ -131,7 +131,7 @@ describe "A block yielded a single" do
           end
         end
       end
-      ruby_version_is "2.8" do
+      ruby_version_is "3.0" do
         it "does not separate non-symbol keys and symbol keys and does not autosplat" do
           suppress_keyword_warning do
             result = m(["a" => 10, b: 2]) { |a=nil, **b| [a, b] }
@@ -141,21 +141,21 @@ describe "A block yielded a single" do
       end
     end
 
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       it "does not treat hashes with string keys as keyword arguments" do
         result = m(["a" => 10]) { |a = nil, **b| [a, b] }
         result.should == [{"a" => 10}, {}]
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       it "does not treat hashes with string keys as keyword arguments and does not autosplat" do
         result = m(["a" => 10]) { |a = nil, **b| [a, b] }
         result.should == [[{"a" => 10}], {}]
       end
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       it "calls #to_hash on the last element if keyword arguments are present" do
         suppress_keyword_warning do
           obj = mock("destructure block keyword arguments")
@@ -202,7 +202,7 @@ describe "A block yielded a single" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       it "does not call #to_hash on the last element if keyword arguments are present" do
         obj = mock("destructure block keyword arguments")
         obj.should_not_receive(:to_hash)
diff --git a/spec/ruby/language/class_spec.rb b/spec/ruby/language/class_spec.rb
index 2b9a4afef7..4ff6e65181 100644
--- a/spec/ruby/language/class_spec.rb
+++ b/spec/ruby/language/class_spec.rb
@@ -285,7 +285,7 @@ describe "A class definition extending an object (sclass)" do
     }.should raise_error(TypeError)
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "allows accessing the block of the original scope" do
       suppress_warning do
         ClassSpecs.sclass_with_block { 123 }.should == 123
@@ -293,7 +293,7 @@ describe "A class definition extending an object (sclass)" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "does not allow accessing the block of the original scope" do
       -> {
         ClassSpecs.sclass_with_block { 123 }
diff --git a/spec/ruby/language/constants_spec.rb b/spec/ruby/language/constants_spec.rb
index 47897234b9..4d46cf2f84 100644
--- a/spec/ruby/language/constants_spec.rb
+++ b/spec/ruby/language/constants_spec.rb
@@ -154,7 +154,7 @@ describe "Literal (A::X) constant resolution" do
     -> { ConstantSpecs::ParentA::CS_CONSTX }.should raise_error(NameError)
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "uses the module or class #name to craft the error message" do
       mod = Module.new do
         def self.name
diff --git a/spec/ruby/language/lambda_spec.rb b/spec/ruby/language/lambda_spec.rb
index 3f2cb0310c..1c9acba39c 100644
--- a/spec/ruby/language/lambda_spec.rb
+++ b/spec/ruby/language/lambda_spec.rb
@@ -179,7 +179,7 @@ describe "A lambda literal -> () { }" do
       result.should == [1, 2, 3, [4, 5], 6, [7, 8], 9, 10, 11, 12]
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       evaluate <<-ruby do
           @a = -> (*, **k) { k }
         ruby
@@ -195,7 +195,7 @@ describe "A lambda literal -> () { }" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       evaluate <<-ruby do
           @a = -> (*, **k) { k }
         ruby
@@ -546,7 +546,7 @@ describe "A lambda expression 'lambda { ... }'" do
       result.should == [1, 2, 3, [4, 5], 6, [7, 8], 9, 10, 11, 12]
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       evaluate <<-ruby do
           @a = lambda { |*, **k| k }
         ruby
@@ -562,7 +562,7 @@ describe "A lambda expression 'lambda { ... }'" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       evaluate <<-ruby do
           @a = lambda { |*, **k| k }
         ruby
diff --git a/spec/ruby/language/method_spec.rb b/spec/ruby/language/method_spec.rb
index e31f3032b0..dd4ea51572 100644
--- a/spec/ruby/language/method_spec.rb
+++ b/spec/ruby/language/method_spec.rb
@@ -733,7 +733,7 @@ describe "A method" do
       end
     end
 
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       evaluate <<-ruby do
           def m(a, b: 1) [a, b] end
         ruby
@@ -768,7 +768,7 @@ describe "A method" do
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       evaluate <<-ruby do
           def m(a, b: 1) [a, b] end
         ruby
@@ -905,7 +905,7 @@ describe "A method" do
       result.should == [[1, 2, 3], 4, [5, 6], 7, [], 8]
     end
 
-    ruby_version_is ""..."2.8" do
+    ruby_version_is ""..."3.0" do
       evaluate <<-ruby do
           def m(a=1, b:) [a, b] end
         ruby
@@ -930,7 +930,7 @@ describe "A method" do
       end
     end
 
-    ruby_version_is "2.8" do
+    ruby_version_is "3.0" do
       evaluate <<-ruby do
           def m(a=1, b:) [a, b] end
         ruby
@@ -1167,7 +1167,7 @@ describe "A method" do
       end
     end
 
-    ruby_version_is "2.7"...'2.8' do
+    ruby_version_is "2.7"...'3.0' do
       evaluate <<-ruby do
           def m(*, a:) a end
         ruby
@@ -1626,7 +1626,7 @@ describe "A method" do
       result.should == [1, 1, [], 2, 3, 2, 4, { h: 5, i: 6 }, l]
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       evaluate <<-ruby do
           def m(a, b = nil, c = nil, d, e: nil, **f)
             [a, b, c, d, e, f]
@@ -1646,7 +1646,7 @@ describe "A method" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       evaluate <<-ruby do
           def m(a, b = nil, c = nil, d, e: nil, **f)
             [a, b, c, d, e, f]
@@ -1665,7 +1665,7 @@ describe "A method" do
     end
   end
 
-  ruby_version_is ''...'2.8' do
+  ruby_version_is ''...'3.0' do
     context "assigns keyword arguments from a passed Hash without modifying it" do
       evaluate <<-ruby do
           def m(a: nil); a; end
@@ -1682,7 +1682,7 @@ describe "A method" do
     end
   end
 
-  ruby_version_is '2.8' do
+  ruby_version_is '3.0' do
     context "raises ArgumentError if passing hash as keyword arguments" do
       evaluate <<-ruby do
           def m(a: nil); a; end
@@ -1787,7 +1787,7 @@ describe "An array-dereference method ([])" do
   end
 end
 
-ruby_version_is '2.8' do
+ruby_version_is '3.0' do
   describe "An endless method definition" do
     evaluate <<-ruby do
       def m(a) = a
diff --git a/spec/ruby/language/numbered_parameters_spec.rb b/spec/ruby/language/numbered_parameters_spec.rb
index 9dd79f44b8..b05c373a68 100644
--- a/spec/ruby/language/numbered_parameters_spec.rb
+++ b/spec/ruby/language/numbered_parameters_spec.rb
@@ -32,7 +32,7 @@ ruby_version_is "2.7" do
       }.should raise_error(SyntaxError, /numbered parameter is already used in.+ outer block here/m)
     end
 
-    ruby_version_is '2.7'...'2.8' do
+    ruby_version_is '2.7'...'3.0' do
       it "can be overwritten with local variable" do
         suppress_warning do
           eval <<~CODE
@@ -49,7 +49,7 @@ ruby_version_is "2.7" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       it "cannot be overwritten with local variable" do
         -> {
           eval <<~CODE
diff --git a/spec/ruby/language/regexp_spec.rb b/spec/ruby/language/regexp_spec.rb
index 059428ec69..def9bba5f7 100644
--- a/spec/ruby/language/regexp_spec.rb
+++ b/spec/ruby/language/regexp_spec.rb
@@ -18,7 +18,7 @@ describe "Literal Regexps" do
     /Hello/.should be_kind_of(Regexp)
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "is frozen" do
       /Hello/.should.frozen?
     end
diff --git a/spec/ruby/language/send_spec.rb b/spec/ruby/language/send_spec.rb
index 17381166dc..e57e2c65dc 100644
--- a/spec/ruby/language/send_spec.rb
+++ b/spec/ruby/language/send_spec.rb
@@ -421,7 +421,7 @@ describe "Invoking a method" do
     specs.rest_len(0,*a,4,*5,6,7,*c,-1).should == 11
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "expands the Array elements from the splat after executing the arguments and block if no other arguments follow the splat" do
       def self.m(*args, &block)
         [args, block]
@@ -437,7 +437,7 @@ describe "Invoking a method" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "expands the Array elements from the splat before applying block argument operations" do
       def self.m(*args, &block)
         [args, block]
diff --git a/spec/ruby/library/bigdecimal/to_s_spec.rb b/spec/ruby/library/bigdecimal/to_s_spec.rb
index f2851976e2..4f1054d38e 100644
--- a/spec/ruby/library/bigdecimal/to_s_spec.rb
+++ b/spec/ruby/library/bigdecimal/to_s_spec.rb
@@ -83,7 +83,7 @@ describe "BigDecimal#to_s" do
     end
   end
 
-  ruby_version_is "2.8" do
+  ruby_version_is "3.0" do
     it "returns a String in US-ASCII encoding when Encoding.default_internal is nil" do
       Encoding.default_internal = nil
       BigDecimal('1.23').to_s.encoding.should equal(Encoding::US_ASCII)
diff --git a/spec/ruby/library/net/http/http/get_spec.rb b/spec/ruby/library/net/http/http/get_spec.rb
index 7676af3c79..0948006fca 100644
--- a/spec/ruby/library/net/http/http/get_spec.rb
+++ b/spec/ruby/library/net/http/http/get_spec.rb
@@ -79,7 +79,7 @@ describe "Net::HTTP.get" do
       end
     end
 
-    ruby_version_is "2.8" do # https://bugs.ruby-lang.org/issues/13882#note-6
+    ruby_version_is "3.0" do # https://bugs.ruby-lang.org/issues/13882#note-6
       it "lets the kill Thread exception goes through and does not replace it with Zlib::BufError" do
         socket, client_thread = start_threads
         begin
diff --git a/spec/ruby/library/rexml/attribute/clone_spec.rb b/spec/ruby/library/rexml/attribute/clone_spec.rb
index 44c8ddebcc..5c86468d45 100644
--- a/spec/ruby/library/rexml/attribute/clone_spec.rb
+++ b/spec/ruby/library/rexml/attribute/clone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#clone" do
diff --git a/spec/ruby/library/rexml/attribute/element_spec.rb b/spec/ruby/library/rexml/attribute/element_spec.rb
index 4fc4d9ed58..0e4ce46a4f 100644
--- a/spec/ruby/library/rexml/attribute/element_spec.rb
+++ b/spec/ruby/library/rexml/attribute/element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#element" do
diff --git a/spec/ruby/library/rexml/attribute/equal_value_spec.rb b/spec/ruby/library/rexml/attribute/equal_value_spec.rb
index a51e1cc390..1498bae624 100644
--- a/spec/ruby/library/rexml/attribute/equal_value_spec.rb
+++ b/spec/ruby/library/rexml/attribute/equal_value_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#==" do
diff --git a/spec/ruby/library/rexml/attribute/hash_spec.rb b/spec/ruby/library/rexml/attribute/hash_spec.rb
index 544cb39515..7e0cbcc1ea 100644
--- a/spec/ruby/library/rexml/attribute/hash_spec.rb
+++ b/spec/ruby/library/rexml/attribute/hash_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#hash" do
diff --git a/spec/ruby/library/rexml/attribute/initialize_spec.rb b/spec/ruby/library/rexml/attribute/initialize_spec.rb
index 84c17d8b7c..35b87b0733 100644
--- a/spec/ruby/library/rexml/attribute/initialize_spec.rb
+++ b/spec/ruby/library/rexml/attribute/initialize_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#initialize" do
diff --git a/spec/ruby/library/rexml/attribute/inspect_spec.rb b/spec/ruby/library/rexml/attribute/inspect_spec.rb
index ffacf78de8..ee5236b98e 100644
--- a/spec/ruby/library/rexml/attribute/inspect_spec.rb
+++ b/spec/ruby/library/rexml/attribute/inspect_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#inspect" do
diff --git a/spec/ruby/library/rexml/attribute/namespace_spec.rb b/spec/ruby/library/rexml/attribute/namespace_spec.rb
index 9b0ff1e9c2..645b3cd1b1 100644
--- a/spec/ruby/library/rexml/attribute/namespace_spec.rb
+++ b/spec/ruby/library/rexml/attribute/namespace_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#namespace" do
diff --git a/spec/ruby/library/rexml/attribute/node_type_spec.rb b/spec/ruby/library/rexml/attribute/node_type_spec.rb
index f2ba0af839..da055ae8f0 100644
--- a/spec/ruby/library/rexml/attribute/node_type_spec.rb
+++ b/spec/ruby/library/rexml/attribute/node_type_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#node_type" do
diff --git a/spec/ruby/library/rexml/attribute/prefix_spec.rb b/spec/ruby/library/rexml/attribute/prefix_spec.rb
index 0eee50de33..87bff4822b 100644
--- a/spec/ruby/library/rexml/attribute/prefix_spec.rb
+++ b/spec/ruby/library/rexml/attribute/prefix_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#prefix" do
diff --git a/spec/ruby/library/rexml/attribute/remove_spec.rb b/spec/ruby/library/rexml/attribute/remove_spec.rb
index c7a9904eb8..5f928b1286 100644
--- a/spec/ruby/library/rexml/attribute/remove_spec.rb
+++ b/spec/ruby/library/rexml/attribute/remove_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#remove" do
diff --git a/spec/ruby/library/rexml/attribute/to_s_spec.rb b/spec/ruby/library/rexml/attribute/to_s_spec.rb
index 00e7e96648..e362cee8f1 100644
--- a/spec/ruby/library/rexml/attribute/to_s_spec.rb
+++ b/spec/ruby/library/rexml/attribute/to_s_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#to_s" do
diff --git a/spec/ruby/library/rexml/attribute/to_string_spec.rb b/spec/ruby/library/rexml/attribute/to_string_spec.rb
index f26c5b85f0..a9d249f5bb 100644
--- a/spec/ruby/library/rexml/attribute/to_string_spec.rb
+++ b/spec/ruby/library/rexml/attribute/to_string_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#to_string" do
diff --git a/spec/ruby/library/rexml/attribute/value_spec.rb b/spec/ruby/library/rexml/attribute/value_spec.rb
index cf6d1deef4..77071f6f70 100644
--- a/spec/ruby/library/rexml/attribute/value_spec.rb
+++ b/spec/ruby/library/rexml/attribute/value_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#value" do
diff --git a/spec/ruby/library/rexml/attribute/write_spec.rb b/spec/ruby/library/rexml/attribute/write_spec.rb
index f69689e724..0012b3cc77 100644
--- a/spec/ruby/library/rexml/attribute/write_spec.rb
+++ b/spec/ruby/library/rexml/attribute/write_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#write" do
diff --git a/spec/ruby/library/rexml/attribute/xpath_spec.rb b/spec/ruby/library/rexml/attribute/xpath_spec.rb
index 945e76280f..0a09046b01 100644
--- a/spec/ruby/library/rexml/attribute/xpath_spec.rb
+++ b/spec/ruby/library/rexml/attribute/xpath_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attribute#xpath" do
diff --git a/spec/ruby/library/rexml/attributes/add_spec.rb b/spec/ruby/library/rexml/attributes/add_spec.rb
index fd23bd458c..e24e9fabbc 100644
--- a/spec/ruby/library/rexml/attributes/add_spec.rb
+++ b/spec/ruby/library/rexml/attributes/add_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/add'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/attributes/append_spec.rb b/spec/ruby/library/rexml/attributes/append_spec.rb
index 99585979f2..f96a727f47 100644
--- a/spec/ruby/library/rexml/attributes/append_spec.rb
+++ b/spec/ruby/library/rexml/attributes/append_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/add'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/attributes/delete_all_spec.rb b/spec/ruby/library/rexml/attributes/delete_all_spec.rb
index f5e6a897c5..707baa235b 100644
--- a/spec/ruby/library/rexml/attributes/delete_all_spec.rb
+++ b/spec/ruby/library/rexml/attributes/delete_all_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#delete_all" do
diff --git a/spec/ruby/library/rexml/attributes/delete_spec.rb b/spec/ruby/library/rexml/attributes/delete_spec.rb
index 59641e55db..723fa70751 100644
--- a/spec/ruby/library/rexml/attributes/delete_spec.rb
+++ b/spec/ruby/library/rexml/attributes/delete_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#delete" do
diff --git a/spec/ruby/library/rexml/attributes/each_attribute_spec.rb b/spec/ruby/library/rexml/attributes/each_attribute_spec.rb
index 1e6b5c1c1f..692cf4f943 100644
--- a/spec/ruby/library/rexml/attributes/each_attribute_spec.rb
+++ b/spec/ruby/library/rexml/attributes/each_attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#each_attribute" do
diff --git a/spec/ruby/library/rexml/attributes/each_spec.rb b/spec/ruby/library/rexml/attributes/each_spec.rb
index 4865114cf1..49add3b77b 100644
--- a/spec/ruby/library/rexml/attributes/each_spec.rb
+++ b/spec/ruby/library/rexml/attributes/each_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#each" do
diff --git a/spec/ruby/library/rexml/attributes/element_reference_spec.rb b/spec/ruby/library/rexml/attributes/element_reference_spec.rb
index 86e0c57fc9..0d089eaab2 100644
--- a/spec/ruby/library/rexml/attributes/element_reference_spec.rb
+++ b/spec/ruby/library/rexml/attributes/element_reference_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#[]" do
diff --git a/spec/ruby/library/rexml/attributes/element_set_spec.rb b/spec/ruby/library/rexml/attributes/element_set_spec.rb
index 90096be82c..834ad682a6 100644
--- a/spec/ruby/library/rexml/attributes/element_set_spec.rb
+++ b/spec/ruby/library/rexml/attributes/element_set_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#[]=" do
diff --git a/spec/ruby/library/rexml/attributes/get_attribute_ns_spec.rb b/spec/ruby/library/rexml/attributes/get_attribute_ns_spec.rb
index 56ed733d37..1109ff519c 100644
--- a/spec/ruby/library/rexml/attributes/get_attribute_ns_spec.rb
+++ b/spec/ruby/library/rexml/attributes/get_attribute_ns_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#get_attribute_ns" do
diff --git a/spec/ruby/library/rexml/attributes/get_attribute_spec.rb b/spec/ruby/library/rexml/attributes/get_attribute_spec.rb
index cf08446eaf..cc94191729 100644
--- a/spec/ruby/library/rexml/attributes/get_attribute_spec.rb
+++ b/spec/ruby/library/rexml/attributes/get_attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#get_attribute" do
diff --git a/spec/ruby/library/rexml/attributes/initialize_spec.rb b/spec/ruby/library/rexml/attributes/initialize_spec.rb
index f7c9652171..42ec742e60 100644
--- a/spec/ruby/library/rexml/attributes/initialize_spec.rb
+++ b/spec/ruby/library/rexml/attributes/initialize_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#initialize" do
diff --git a/spec/ruby/library/rexml/attributes/length_spec.rb b/spec/ruby/library/rexml/attributes/length_spec.rb
index 60a348ef7b..81733b4a96 100644
--- a/spec/ruby/library/rexml/attributes/length_spec.rb
+++ b/spec/ruby/library/rexml/attributes/length_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/length'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/attributes/namespaces_spec.rb b/spec/ruby/library/rexml/attributes/namespaces_spec.rb
index 80c40ccc90..b88346854f 100644
--- a/spec/ruby/library/rexml/attributes/namespaces_spec.rb
+++ b/spec/ruby/library/rexml/attributes/namespaces_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#namespaces" do
diff --git a/spec/ruby/library/rexml/attributes/prefixes_spec.rb b/spec/ruby/library/rexml/attributes/prefixes_spec.rb
index 2c1e3f8705..574b7ffbaf 100644
--- a/spec/ruby/library/rexml/attributes/prefixes_spec.rb
+++ b/spec/ruby/library/rexml/attributes/prefixes_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#prefixes" do
diff --git a/spec/ruby/library/rexml/attributes/size_spec.rb b/spec/ruby/library/rexml/attributes/size_spec.rb
index e7fad6bd11..13ef08f644 100644
--- a/spec/ruby/library/rexml/attributes/size_spec.rb
+++ b/spec/ruby/library/rexml/attributes/size_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/length'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/attributes/to_a_spec.rb b/spec/ruby/library/rexml/attributes/to_a_spec.rb
index cc98e4f0d9..902cd86a29 100644
--- a/spec/ruby/library/rexml/attributes/to_a_spec.rb
+++ b/spec/ruby/library/rexml/attributes/to_a_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Attributes#to_a" do
diff --git a/spec/ruby/library/rexml/cdata/clone_spec.rb b/spec/ruby/library/rexml/cdata/clone_spec.rb
index e8e322f9a5..abe1a0b062 100644
--- a/spec/ruby/library/rexml/cdata/clone_spec.rb
+++ b/spec/ruby/library/rexml/cdata/clone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::CData#clone" do
diff --git a/spec/ruby/library/rexml/cdata/initialize_spec.rb b/spec/ruby/library/rexml/cdata/initialize_spec.rb
index 2ef1cab2b3..1393d97f4a 100644
--- a/spec/ruby/library/rexml/cdata/initialize_spec.rb
+++ b/spec/ruby/library/rexml/cdata/initialize_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::CData#initialize" do
diff --git a/spec/ruby/library/rexml/cdata/to_s_spec.rb b/spec/ruby/library/rexml/cdata/to_s_spec.rb
index e42d7491b8..a5c061f116 100644
--- a/spec/ruby/library/rexml/cdata/to_s_spec.rb
+++ b/spec/ruby/library/rexml/cdata/to_s_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/to_s'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/cdata/value_spec.rb b/spec/ruby/library/rexml/cdata/value_spec.rb
index 1c25cb205e..9f36226976 100644
--- a/spec/ruby/library/rexml/cdata/value_spec.rb
+++ b/spec/ruby/library/rexml/cdata/value_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require_relative 'shared/to_s'
   require 'rexml/document'
 
diff --git a/spec/ruby/library/rexml/document/add_element_spec.rb b/spec/ruby/library/rexml/document/add_element_spec.rb
index cc0617c061..29dec0b24e 100644
--- a/spec/ruby/library/rexml/document/add_element_spec.rb
+++ b/spec/ruby/library/rexml/document/add_element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#add_element" do
diff --git a/spec/ruby/library/rexml/document/add_spec.rb b/spec/ruby/library/rexml/document/add_spec.rb
index 10056ed1e7..8666d3dbf9 100644
--- a/spec/ruby/library/rexml/document/add_spec.rb
+++ b/spec/ruby/library/rexml/document/add_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   # This spec defines Document#add and Document#<<
diff --git a/spec/ruby/library/rexml/document/clone_spec.rb b/spec/ruby/library/rexml/document/clone_spec.rb
index 2106c72888..137fe8a073 100644
--- a/spec/ruby/library/rexml/document/clone_spec.rb
+++ b/spec/ruby/library/rexml/document/clone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   # According to the MRI documentation (http://www.ruby-doc.org/stdlib/libdoc/rexml/rdoc/index.html),
diff --git a/spec/ruby/library/rexml/document/doctype_spec.rb b/spec/ruby/library/rexml/document/doctype_spec.rb
index 4d14460ef4..e1b7ba4916 100644
--- a/spec/ruby/library/rexml/document/doctype_spec.rb
+++ b/spec/ruby/library/rexml/document/doctype_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#doctype" do
diff --git a/spec/ruby/library/rexml/document/encoding_spec.rb b/spec/ruby/library/rexml/document/encoding_spec.rb
index aa140b0f6f..2cc947f06a 100644
--- a/spec/ruby/library/rexml/document/encoding_spec.rb
+++ b/spec/ruby/library/rexml/document/encoding_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#encoding" do
diff --git a/spec/ruby/library/rexml/document/expanded_name_spec.rb b/spec/ruby/library/rexml/document/expanded_name_spec.rb
index 4f53914326..9d1025b5e0 100644
--- a/spec/ruby/library/rexml/document/expanded_name_spec.rb
+++ b/spec/ruby/library/rexml/document/expanded_name_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe :document_expanded_name, shared: true do
diff --git a/spec/ruby/library/rexml/document/new_spec.rb b/spec/ruby/library/rexml/document/new_spec.rb
index 52b20341f4..4e24b6f5a1 100644
--- a/spec/ruby/library/rexml/document/new_spec.rb
+++ b/spec/ruby/library/rexml/document/new_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#new" do
diff --git a/spec/ruby/library/rexml/document/node_type_spec.rb b/spec/ruby/library/rexml/document/node_type_spec.rb
index 13aa6a6eb5..b6d7e7a7da 100644
--- a/spec/ruby/library/rexml/document/node_type_spec.rb
+++ b/spec/ruby/library/rexml/document/node_type_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#node_type" do
diff --git a/spec/ruby/library/rexml/document/root_spec.rb b/spec/ruby/library/rexml/document/root_spec.rb
index e01b0fa67c..1a584a720b 100644
--- a/spec/ruby/library/rexml/document/root_spec.rb
+++ b/spec/ruby/library/rexml/document/root_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#root" do
diff --git a/spec/ruby/library/rexml/document/stand_alone_spec.rb b/spec/ruby/library/rexml/document/stand_alone_spec.rb
index 667b2c0184..e1c721e782 100644
--- a/spec/ruby/library/rexml/document/stand_alone_spec.rb
+++ b/spec/ruby/library/rexml/document/stand_alone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#stand_alone?" do
diff --git a/spec/ruby/library/rexml/document/version_spec.rb b/spec/ruby/library/rexml/document/version_spec.rb
index 8e0f66cb07..4f6b40551b 100644
--- a/spec/ruby/library/rexml/document/version_spec.rb
+++ b/spec/ruby/library/rexml/document/version_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#version" do
diff --git a/spec/ruby/library/rexml/document/write_spec.rb b/spec/ruby/library/rexml/document/write_spec.rb
index 774c12982c..00c22141b3 100644
--- a/spec/ruby/library/rexml/document/write_spec.rb
+++ b/spec/ruby/library/rexml/document/write_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
   require 'rexml/formatters/transitive'
 
diff --git a/spec/ruby/library/rexml/document/xml_decl_spec.rb b/spec/ruby/library/rexml/document/xml_decl_spec.rb
index 6862c7bb6b..8ac47510b0 100644
--- a/spec/ruby/library/rexml/document/xml_decl_spec.rb
+++ b/spec/ruby/library/rexml/document/xml_decl_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document#xml_decl" do
diff --git a/spec/ruby/library/rexml/element/add_attribute_spec.rb b/spec/ruby/library/rexml/element/add_attribute_spec.rb
index b688f1db65..64f2ec84a3 100644
--- a/spec/ruby/library/rexml/element/add_attribute_spec.rb
+++ b/spec/ruby/library/rexml/element/add_attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#add_attribute" do
diff --git a/spec/ruby/library/rexml/element/add_attributes_spec.rb b/spec/ruby/library/rexml/element/add_attributes_spec.rb
index 8e7e991f11..f331803dd8 100644
--- a/spec/ruby/library/rexml/element/add_attributes_spec.rb
+++ b/spec/ruby/library/rexml/element/add_attributes_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#add_attributes" do
diff --git a/spec/ruby/library/rexml/element/add_element_spec.rb b/spec/ruby/library/rexml/element/add_element_spec.rb
index 90fb36f8e3..8ba023f2c7 100644
--- a/spec/ruby/library/rexml/element/add_element_spec.rb
+++ b/spec/ruby/library/rexml/element/add_element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#add_element" do
diff --git a/spec/ruby/library/rexml/element/add_namespace_spec.rb b/spec/ruby/library/rexml/element/add_namespace_spec.rb
index 5e601dcf28..44b074bac7 100644
--- a/spec/ruby/library/rexml/element/add_namespace_spec.rb
+++ b/spec/ruby/library/rexml/element/add_namespace_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#add_namespace" do
diff --git a/spec/ruby/library/rexml/element/add_text_spec.rb b/spec/ruby/library/rexml/element/add_text_spec.rb
index 200d748e61..3a0531ad42 100644
--- a/spec/ruby/library/rexml/element/add_text_spec.rb
+++ b/spec/ruby/library/rexml/element/add_text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#add_text" do
diff --git a/spec/ruby/library/rexml/element/attribute_spec.rb b/spec/ruby/library/rexml/element/attribute_spec.rb
index 7b2c26658a..b223d3440c 100644
--- a/spec/ruby/library/rexml/element/attribute_spec.rb
+++ b/spec/ruby/library/rexml/element/attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#attribute" do
diff --git a/spec/ruby/library/rexml/element/attributes_spec.rb b/spec/ruby/library/rexml/element/attributes_spec.rb
index 79a3368a9e..92bcecc40a 100644
--- a/spec/ruby/library/rexml/element/attributes_spec.rb
+++ b/spec/ruby/library/rexml/element/attributes_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#attributes" do
diff --git a/spec/ruby/library/rexml/element/cdatas_spec.rb b/spec/ruby/library/rexml/element/cdatas_spec.rb
index ecbca94f62..988b2cb422 100644
--- a/spec/ruby/library/rexml/element/cdatas_spec.rb
+++ b/spec/ruby/library/rexml/element/cdatas_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#cdatas" do
diff --git a/spec/ruby/library/rexml/element/clone_spec.rb b/spec/ruby/library/rexml/element/clone_spec.rb
index 06948585a4..490e43181f 100644
--- a/spec/ruby/library/rexml/element/clone_spec.rb
+++ b/spec/ruby/library/rexml/element/clone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#clone" do
diff --git a/spec/ruby/library/rexml/element/comments_spec.rb b/spec/ruby/library/rexml/element/comments_spec.rb
index 26043366d3..84ab9a7469 100644
--- a/spec/ruby/library/rexml/element/comments_spec.rb
+++ b/spec/ruby/library/rexml/element/comments_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#comments" do
diff --git a/spec/ruby/library/rexml/element/delete_attribute_spec.rb b/spec/ruby/library/rexml/element/delete_attribute_spec.rb
index dab20468c4..e2ba81eb0d 100644
--- a/spec/ruby/library/rexml/element/delete_attribute_spec.rb
+++ b/spec/ruby/library/rexml/element/delete_attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#delete_attribute" do
diff --git a/spec/ruby/library/rexml/element/delete_element_spec.rb b/spec/ruby/library/rexml/element/delete_element_spec.rb
index f2c50eb95e..c0b486a6f7 100644
--- a/spec/ruby/library/rexml/element/delete_element_spec.rb
+++ b/spec/ruby/library/rexml/element/delete_element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#delete_element" do
diff --git a/spec/ruby/library/rexml/element/delete_namespace_spec.rb b/spec/ruby/library/rexml/element/delete_namespace_spec.rb
index 4b37c2c41c..a7763d51e8 100644
--- a/spec/ruby/library/rexml/element/delete_namespace_spec.rb
+++ b/spec/ruby/library/rexml/element/delete_namespace_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#delete_namespace" do
diff --git a/spec/ruby/library/rexml/element/document_spec.rb b/spec/ruby/library/rexml/element/document_spec.rb
index c9f74c4056..754f27d8a0 100644
--- a/spec/ruby/library/rexml/element/document_spec.rb
+++ b/spec/ruby/library/rexml/element/document_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#document" do
diff --git a/spec/ruby/library/rexml/element/each_element_with_attribute_spec.rb b/spec/ruby/library/rexml/element/each_element_with_attribute_spec.rb
index 5d6f4b371a..f2d779e577 100644
--- a/spec/ruby/library/rexml/element/each_element_with_attribute_spec.rb
+++ b/spec/ruby/library/rexml/element/each_element_with_attribute_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#each_element_with_attributes" do
diff --git a/spec/ruby/library/rexml/element/each_element_with_text_spec.rb b/spec/ruby/library/rexml/element/each_element_with_text_spec.rb
index 65f5ea5f11..8f9d062c99 100644
--- a/spec/ruby/library/rexml/element/each_element_with_text_spec.rb
+++ b/spec/ruby/library/rexml/element/each_element_with_text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#each_element_with_text" do
diff --git a/spec/ruby/library/rexml/element/element_reference_spec.rb b/spec/ruby/library/rexml/element/element_reference_spec.rb
index 0deaf990eb..9e5d371ce4 100644
--- a/spec/ruby/library/rexml/element/element_reference_spec.rb
+++ b/spec/ruby/library/rexml/element/element_reference_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#[]" do
diff --git a/spec/ruby/library/rexml/element/get_text_spec.rb b/spec/ruby/library/rexml/element/get_text_spec.rb
index cfdc758acd..0fa8d7cb3f 100644
--- a/spec/ruby/library/rexml/element/get_text_spec.rb
+++ b/spec/ruby/library/rexml/element/get_text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#get_text" do
diff --git a/spec/ruby/library/rexml/element/has_attributes_spec.rb b/spec/ruby/library/rexml/element/has_attributes_spec.rb
index 83d71396c4..af3ce8ce1b 100644
--- a/spec/ruby/library/rexml/element/has_attributes_spec.rb
+++ b/spec/ruby/library/rexml/element/has_attributes_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#has_attributes?" do
diff --git a/spec/ruby/library/rexml/element/has_elements_spec.rb b/spec/ruby/library/rexml/element/has_elements_spec.rb
index 815a987ca0..04c7fe01a5 100644
--- a/spec/ruby/library/rexml/element/has_elements_spec.rb
+++ b/spec/ruby/library/rexml/element/has_elements_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#has_elements?" do
diff --git a/spec/ruby/library/rexml/element/has_text_spec.rb b/spec/ruby/library/rexml/element/has_text_spec.rb
index f2c5bc4ffa..de19fe0763 100644
--- a/spec/ruby/library/rexml/element/has_text_spec.rb
+++ b/spec/ruby/library/rexml/element/has_text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#has_text?" do
diff --git a/spec/ruby/library/rexml/element/inspect_spec.rb b/spec/ruby/library/rexml/element/inspect_spec.rb
index 5eb8ef2265..ec16c136ee 100644
--- a/spec/ruby/library/rexml/element/inspect_spec.rb
+++ b/spec/ruby/library/rexml/element/inspect_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#inspect" do
diff --git a/spec/ruby/library/rexml/element/instructions_spec.rb b/spec/ruby/library/rexml/element/instructions_spec.rb
index bd9dfcef50..11f1396df0 100644
--- a/spec/ruby/library/rexml/element/instructions_spec.rb
+++ b/spec/ruby/library/rexml/element/instructions_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#instructions" do
diff --git a/spec/ruby/library/rexml/element/namespace_spec.rb b/spec/ruby/library/rexml/element/namespace_spec.rb
index a359887826..28966289c5 100644
--- a/spec/ruby/library/rexml/element/namespace_spec.rb
+++ b/spec/ruby/library/rexml/element/namespace_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#namespace" do
diff --git a/spec/ruby/library/rexml/element/namespaces_spec.rb b/spec/ruby/library/rexml/element/namespaces_spec.rb
index 7bf8ec6421..4544540173 100644
--- a/spec/ruby/library/rexml/element/namespaces_spec.rb
+++ b/spec/ruby/library/rexml/element/namespaces_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#namespaces" do
diff --git a/spec/ruby/library/rexml/element/new_spec.rb b/spec/ruby/library/rexml/element/new_spec.rb
index 35a8438495..c6ab289476 100644
--- a/spec/ruby/library/rexml/element/new_spec.rb
+++ b/spec/ruby/library/rexml/element/new_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#new" do
diff --git a/spec/ruby/library/rexml/element/next_element_spec.rb b/spec/ruby/library/rexml/element/next_element_spec.rb
index 2c7875a248..46d8f74760 100644
--- a/spec/ruby/library/rexml/element/next_element_spec.rb
+++ b/spec/ruby/library/rexml/element/next_element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#next_element" do
diff --git a/spec/ruby/library/rexml/element/node_type_spec.rb b/spec/ruby/library/rexml/element/node_type_spec.rb
index d641dd89d3..a39c2deca5 100644
--- a/spec/ruby/library/rexml/element/node_type_spec.rb
+++ b/spec/ruby/library/rexml/element/node_type_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#node_type" do
diff --git a/spec/ruby/library/rexml/element/prefixes_spec.rb b/spec/ruby/library/rexml/element/prefixes_spec.rb
index 77557e165a..ea4caab4bc 100644
--- a/spec/ruby/library/rexml/element/prefixes_spec.rb
+++ b/spec/ruby/library/rexml/element/prefixes_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#prefixes" do
diff --git a/spec/ruby/library/rexml/element/previous_element_spec.rb b/spec/ruby/library/rexml/element/previous_element_spec.rb
index aa19c187be..a43b1ddd10 100644
--- a/spec/ruby/library/rexml/element/previous_element_spec.rb
+++ b/spec/ruby/library/rexml/element/previous_element_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#previous_element" do
diff --git a/spec/ruby/library/rexml/element/raw_spec.rb b/spec/ruby/library/rexml/element/raw_spec.rb
index 2a913e1ac7..200a99d194 100644
--- a/spec/ruby/library/rexml/element/raw_spec.rb
+++ b/spec/ruby/library/rexml/element/raw_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#raw" do
diff --git a/spec/ruby/library/rexml/element/root_spec.rb b/spec/ruby/library/rexml/element/root_spec.rb
index 4e88446ac2..52aa4571b9 100644
--- a/spec/ruby/library/rexml/element/root_spec.rb
+++ b/spec/ruby/library/rexml/element/root_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#root" do
diff --git a/spec/ruby/library/rexml/element/text_spec.rb b/spec/ruby/library/rexml/element/text_spec.rb
index b7d493589e..3234bba153 100644
--- a/spec/ruby/library/rexml/element/text_spec.rb
+++ b/spec/ruby/library/rexml/element/text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#text" do
diff --git a/spec/ruby/library/rexml/element/texts_spec.rb b/spec/ruby/library/rexml/element/texts_spec.rb
index 7f610ba31b..2d374d5e66 100644
--- a/spec/ruby/library/rexml/element/texts_spec.rb
+++ b/spec/ruby/library/rexml/element/texts_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#texts" do
diff --git a/spec/ruby/library/rexml/element/whitespace_spec.rb b/spec/ruby/library/rexml/element/whitespace_spec.rb
index 8cd2e5b5e8..f455067922 100644
--- a/spec/ruby/library/rexml/element/whitespace_spec.rb
+++ b/spec/ruby/library/rexml/element/whitespace_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Element#whitespace" do
diff --git a/spec/ruby/library/rexml/node/each_recursive_spec.rb b/spec/ruby/library/rexml/node/each_recursive_spec.rb
index 4a669a399d..da347b1389 100644
--- a/spec/ruby/library/rexml/node/each_recursive_spec.rb
+++ b/spec/ruby/library/rexml/node/each_recursive_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#each_recursive" do
diff --git a/spec/ruby/library/rexml/node/find_first_recursive_spec.rb b/spec/ruby/library/rexml/node/find_first_recursive_spec.rb
index ab7900a3ac..2a4f1097ae 100644
--- a/spec/ruby/library/rexml/node/find_first_recursive_spec.rb
+++ b/spec/ruby/library/rexml/node/find_first_recursive_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#find_first_recursive" do
diff --git a/spec/ruby/library/rexml/node/index_in_parent_spec.rb b/spec/ruby/library/rexml/node/index_in_parent_spec.rb
index 1c75c8cd54..55909f86d6 100644
--- a/spec/ruby/library/rexml/node/index_in_parent_spec.rb
+++ b/spec/ruby/library/rexml/node/index_in_parent_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#index_in_parent" do
diff --git a/spec/ruby/library/rexml/node/next_sibling_node_spec.rb b/spec/ruby/library/rexml/node/next_sibling_node_spec.rb
index 0aac3fee0f..7aae861d75 100644
--- a/spec/ruby/library/rexml/node/next_sibling_node_spec.rb
+++ b/spec/ruby/library/rexml/node/next_sibling_node_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#next_sibling_node" do
diff --git a/spec/ruby/library/rexml/node/parent_spec.rb b/spec/ruby/library/rexml/node/parent_spec.rb
index 0a31abaf0f..07425e8f36 100644
--- a/spec/ruby/library/rexml/node/parent_spec.rb
+++ b/spec/ruby/library/rexml/node/parent_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#parent?" do
diff --git a/spec/ruby/library/rexml/node/previous_sibling_node_spec.rb b/spec/ruby/library/rexml/node/previous_sibling_node_spec.rb
index ca07e1e1f9..11263968a7 100644
--- a/spec/ruby/library/rexml/node/previous_sibling_node_spec.rb
+++ b/spec/ruby/library/rexml/node/previous_sibling_node_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Node#previous_sibling_node" do
diff --git a/spec/ruby/library/rexml/text/append_spec.rb b/spec/ruby/library/rexml/text/append_spec.rb
index be5636e84d..5e7a5bae7c 100644
--- a/spec/ruby/library/rexml/text/append_spec.rb
+++ b/spec/ruby/library/rexml/text/append_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#<<" do
diff --git a/spec/ruby/library/rexml/text/clone_spec.rb b/spec/ruby/library/rexml/text/clone_spec.rb
index 28feef40e9..7801782ff5 100644
--- a/spec/ruby/library/rexml/text/clone_spec.rb
+++ b/spec/ruby/library/rexml/text/clone_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#clone" do
diff --git a/spec/ruby/library/rexml/text/comparison_spec.rb b/spec/ruby/library/rexml/text/comparison_spec.rb
index ebd95683c6..119dd050a6 100644
--- a/spec/ruby/library/rexml/text/comparison_spec.rb
+++ b/spec/ruby/library/rexml/text/comparison_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#<=>" do
diff --git a/spec/ruby/library/rexml/text/empty_spec.rb b/spec/ruby/library/rexml/text/empty_spec.rb
index 18f31580ad..4c9c899bcb 100644
--- a/spec/ruby/library/rexml/text/empty_spec.rb
+++ b/spec/ruby/library/rexml/text/empty_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#empty?" do
diff --git a/spec/ruby/library/rexml/text/indent_text_spec.rb b/spec/ruby/library/rexml/text/indent_text_spec.rb
index 16cba7faf6..73065c37da 100644
--- a/spec/ruby/library/rexml/text/indent_text_spec.rb
+++ b/spec/ruby/library/rexml/text/indent_text_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#indent_text" do
diff --git a/spec/ruby/library/rexml/text/inspect_spec.rb b/spec/ruby/library/rexml/text/inspect_spec.rb
index 87203b246c..af389890ee 100644
--- a/spec/ruby/library/rexml/text/inspect_spec.rb
+++ b/spec/ruby/library/rexml/text/inspect_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#inspect" do
diff --git a/spec/ruby/library/rexml/text/new_spec.rb b/spec/ruby/library/rexml/text/new_spec.rb
index 7a39f11fa6..8b33da9294 100644
--- a/spec/ruby/library/rexml/text/new_spec.rb
+++ b/spec/ruby/library/rexml/text/new_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text.new" do
diff --git a/spec/ruby/library/rexml/text/node_type_spec.rb b/spec/ruby/library/rexml/text/node_type_spec.rb
index 17fefb87f1..f44a1ede3e 100644
--- a/spec/ruby/library/rexml/text/node_type_spec.rb
+++ b/spec/ruby/library/rexml/text/node_type_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#node_type" do
diff --git a/spec/ruby/library/rexml/text/normalize_spec.rb b/spec/ruby/library/rexml/text/normalize_spec.rb
index 10ce92615a..cde11ec3c9 100644
--- a/spec/ruby/library/rexml/text/normalize_spec.rb
+++ b/spec/ruby/library/rexml/text/normalize_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text.normalize" do
diff --git a/spec/ruby/library/rexml/text/read_with_substitution_spec.rb b/spec/ruby/library/rexml/text/read_with_substitution_spec.rb
index 4bf54c1b31..7ff26f4d53 100644
--- a/spec/ruby/library/rexml/text/read_with_substitution_spec.rb
+++ b/spec/ruby/library/rexml/text/read_with_substitution_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text.read_with_substitution" do
diff --git a/spec/ruby/library/rexml/text/to_s_spec.rb b/spec/ruby/library/rexml/text/to_s_spec.rb
index f7e0e0b284..e67632c9a1 100644
--- a/spec/ruby/library/rexml/text/to_s_spec.rb
+++ b/spec/ruby/library/rexml/text/to_s_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#to_s" do
diff --git a/spec/ruby/library/rexml/text/unnormalize_spec.rb b/spec/ruby/library/rexml/text/unnormalize_spec.rb
index 0f173710fa..7b507194d0 100644
--- a/spec/ruby/library/rexml/text/unnormalize_spec.rb
+++ b/spec/ruby/library/rexml/text/unnormalize_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text.unnormalize" do
diff --git a/spec/ruby/library/rexml/text/value_spec.rb b/spec/ruby/library/rexml/text/value_spec.rb
index f566412128..53d40c765f 100644
--- a/spec/ruby/library/rexml/text/value_spec.rb
+++ b/spec/ruby/library/rexml/text/value_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#value" do
diff --git a/spec/ruby/library/rexml/text/wrap_spec.rb b/spec/ruby/library/rexml/text/wrap_spec.rb
index 415775dd47..331a8439e2 100644
--- a/spec/ruby/library/rexml/text/wrap_spec.rb
+++ b/spec/ruby/library/rexml/text/wrap_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#wrap" do
diff --git a/spec/ruby/library/rexml/text/write_with_substitution_spec.rb b/spec/ruby/library/rexml/text/write_with_substitution_spec.rb
index 1737b443d7..840f141e3d 100644
--- a/spec/ruby/library/rexml/text/write_with_substitution_spec.rb
+++ b/spec/ruby/library/rexml/text/write_with_substitution_spec.rb
@@ -1,6 +1,6 @@
 require_relative '../../../spec_helper'
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Text#write_with_substitution" do
diff --git a/spec/ruby/library/stringio/append_spec.rb b/spec/ruby/library/stringio/append_spec.rb
index b35d17ed31..d0cf5550cd 100644
--- a/spec/ruby/library/stringio/append_spec.rb
+++ b/spec/ruby/library/stringio/append_spec.rb
@@ -36,7 +36,7 @@ describe "StringIO#<< when passed [Object]" do
     end
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "does not taint self when the passed argument is tainted" do
       (@io << "test".taint)
       @io.tainted?.should be_false
diff --git a/spec/ruby/library/stringio/reopen_spec.rb b/spec/ruby/library/stringio/reopen_spec.rb
index 9943978377..6752cf9970 100644
--- a/spec/ruby/library/stringio/reopen_spec.rb
+++ b/spec/ruby/library/stringio/reopen_spec.rb
@@ -23,7 +23,7 @@ describe "StringIO#reopen when passed [Object, Integer]" do
     @io.string.should == "reopened, another time"
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     # NOTE: WEIRD!
     it "does not taint self when the passed Object was tainted" do
       @io.reopen("reopened".taint, IO::RDONLY)
@@ -92,7 +92,7 @@ describe "StringIO#reopen when passed [Object, Object]" do
     str.should == ""
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     # NOTE: WEIRD!
     it "does not taint self when the passed Object was tainted" do
       @io.reopen("reopened".taint, "r")
@@ -164,7 +164,7 @@ describe "StringIO#reopen when passed [String]" do
     @io.string.should == "reopened"
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     # NOTE: WEIRD!
     it "does not taint self when the passed Object was tainted" do
       @io.reopen("reopened".taint)
diff --git a/spec/ruby/library/stringio/shared/write.rb b/spec/ruby/library/stringio/shared/write.rb
index dc5e1442ec..080729217b 100644
--- a/spec/ruby/library/stringio/shared/write.rb
+++ b/spec/ruby/library/stringio/shared/write.rb
@@ -52,7 +52,7 @@ describe :stringio_write_string, shared: true do
     end
   end
 
-  ruby_version_is ""..."2.8" do
+  ruby_version_is ""..."3.0" do
     it "does not taint self when the passed argument is tainted" do
       @io.send(@method, "test".taint)
       @io.tainted?.should be_false
diff --git a/spec/ruby/optional/capi/util_spec.rb b/spec/ruby/optional/capi/util_spec.rb
index 099222b2d0..0251c7c62b 100644
--- a/spec/ruby/optional/capi/util_spec.rb
+++ b/spec/ruby/optional/capi/util_spec.rb
@@ -115,7 +115,7 @@ describe "C-API Util function" do
       ScratchPad.recorded.should == [1, nil]
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       it "assigns required and Hash arguments with nil Hash" do
         suppress_warning do
           @o.rb_scan_args([1, nil], "1:", 2, @acc).should == 1
@@ -124,7 +124,7 @@ describe "C-API Util function" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       it "rejects the use of nil as a hash" do
         -> {
           @o.rb_scan_args([1, nil], "1:", 2, @acc).should == 1
@@ -144,7 +144,7 @@ describe "C-API Util function" do
       ScratchPad.recorded.should == [1, 2, [3, 4], 5, h, @prc]
     end
 
-    ruby_version_is ''...'2.8' do
+    ruby_version_is ''...'3.0' do
       # r43934
       it "rejects non-keyword arguments" do
         h = {1 => 2, 3 => 4}
@@ -175,7 +175,7 @@ describe "C-API Util function" do
       end
     end
 
-    ruby_version_is '2.8' do
+    ruby_version_is '3.0' do
       it "does not reject non-symbol keys in keyword arguments" do
         h = {1 => 2, 3 => 4}
         @o.rb_scan_args([h], "#{@keyword_prefix}0:", 1, @acc).should == 0
diff --git a/spec/ruby/security/cve_2014_8080_spec.rb b/spec/ruby/security/cve_2014_8080_spec.rb
index d881032ef7..a3f4483994 100644
--- a/spec/ruby/security/cve_2014_8080_spec.rb
+++ b/spec/ruby/security/cve_2014_8080_spec.rb
@@ -1,7 +1,7 @@
 require_relative '../spec_helper'
 
 
-ruby_version_is ''...'2.8' do
+ruby_version_is ''...'3.0' do
   require 'rexml/document'
 
   describe "REXML::Document.new" do