1 files changed, 16 insertions, 13 deletions
diff --git a/spec/ruby/library/matrix/rank_spec.rb b/spec/ruby/library/matrix/rank_spec.rb
index d4403d23ed..fc795b58c1 100644
--- a/spec/ruby/library/matrix/rank_spec.rb
+++ b/spec/ruby/library/matrix/rank_spec.rb
@@ -1,19 +1,22 @@
 require_relative '../../spec_helper'
-require 'matrix'
 
-describe "Matrix#rank" do
-  it "returns the rank of the Matrix" do
-    Matrix[ [7,6], [3,9] ].rank.should == 2
-  end
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  it "doesn't loop forever" do
-    Matrix[ [1,2,3], [4,5,6], [7,8,9] ].rank.should == 2
-    Matrix[ [1, 2, 0, 3], [1, -2, 3, 0], [0, 0, 4, 8], [2, 4, 0, 6] ].rank.
-    should == 3
-  end
+  describe "Matrix#rank" do
+    it "returns the rank of the Matrix" do
+      Matrix[ [7,6], [3,9] ].rank.should == 2
+    end
+
+    it "doesn't loop forever" do
+      Matrix[ [1,2,3], [4,5,6], [7,8,9] ].rank.should == 2
+      Matrix[ [1, 2, 0, 3], [1, -2, 3, 0], [0, 0, 4, 8], [2, 4, 0, 6] ].rank.
+      should == 3
+    end
 
-  it "works for some easy rectangular matrices" do
-    Matrix[[0,0],[0,0],[1,0]].rank.should == 1
-    Matrix[[0,1],[0,0],[1,0]].rank.should == 2
+    it "works for some easy rectangular matrices" do
+      Matrix[[0,0],[0,0],[1,0]].rank.should == 1
+      Matrix[[0,1],[0,0],[1,0]].rank.should == 2
+    end
   end
 end