diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7ee4b1..9642135 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.4.3](https://github.com/googleapis/python-video-transcoder/compare/v1.4.2...v1.4.3) (2022-10-07)
+
+
+### Bug Fixes
+
+* **deps:** Allow protobuf 3.19.5 ([#246](https://github.com/googleapis/python-video-transcoder/issues/246)) ([34fdac8](https://github.com/googleapis/python-video-transcoder/commit/34fdac8f493cf4a14319c4b7d29f09bd0f771167))
+
 ## [1.4.2](https://github.com/googleapis/python-video-transcoder/compare/v1.4.1...v1.4.2) (2022-09-29)
 
 
diff --git a/samples/snippets/requirements-test.txt b/samples/snippets/requirements-test.txt
index 57f6f4c..c94d751 100644
--- a/samples/snippets/requirements-test.txt
+++ b/samples/snippets/requirements-test.txt
@@ -1,3 +1,3 @@
-backoff==2.1.2
+backoff==2.2.1
 google-cloud-storage==2.5.0
 pytest==7.1.3
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index abdf68e..57f3b6c 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,3 +1,3 @@
-google-api-python-client==2.62.0
-grpcio==1.49.0
-google-cloud-video-transcoder==1.4.1
+google-api-python-client==2.64.0
+grpcio==1.49.1
+google-cloud-video-transcoder==1.4.2
diff --git a/setup.py b/setup.py
index 8d18a0a..ee196b9 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
 
 import setuptools  # type: ignore
 
-version = "1.4.2"
+version = "1.4.3"
 
 package_root = os.path.abspath(os.path.dirname(__file__))
 
@@ -44,7 +44,7 @@
     install_requires=(
         "google-api-core[grpc] >= 1.32.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
         "proto-plus >= 1.22.0, <2.0.0dev",
-        "protobuf >= 3.20.2, <5.0.0dev",
+        "protobuf>=3.19.5,<5.0.0dev,!=3.20.0,!=3.20.1,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
     ),
     python_requires=">=3.7",
     classifiers=[
diff --git a/testing/constraints-3.7.txt b/testing/constraints-3.7.txt
index 260e08b..5dcaa6f 100644
--- a/testing/constraints-3.7.txt
+++ b/testing/constraints-3.7.txt
@@ -7,4 +7,4 @@
 # Then this file should have foo==1.14.0
 google-api-core==1.32.0
 proto-plus==1.22.0
-protobuf==3.20.2
+protobuf==3.19.5