diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2b55f1e3..a33180aae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@
 [1]: https://pypi.org/project/google-cloud-pubsub/#history
 
 
+## [1.7.2](https://github.com/googleapis/python-pubsub/compare/v1.7.1...v1.7.2) (2022-06-08)
+
+
+### Bug Fixes
+
+* **deps:** require protobuf<4.0.0 on v1 branch ([#714](https://github.com/googleapis/python-pubsub/issues/714)) ([91d7e70](https://github.com/googleapis/python-pubsub/commit/91d7e70d7c0afdfe7a0b4a73a506b56ff999917d))
+
 ### [1.7.1](https://github.com/googleapis/python-pubsub/compare/v1.7.0...v1.7.1) (2022-04-06)
 
 
diff --git a/noxfile.py b/noxfile.py
index d1d3acaa0..f69ee5de7 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -144,7 +144,7 @@ def docs(session):
     """Build the docs for this library."""
 
     session.install("-e", ".")
-    session.install("sphinx", "alabaster", "recommonmark")
+    session.install("sphinx<3.0.0", "jinja2<3.1", "alabaster", "recommonmark")
 
     shutil.rmtree(os.path.join("docs", "_build"), ignore_errors=True)
     session.run(
diff --git a/setup.py b/setup.py
index fb083f03a..fb6f65cbd 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = "google-cloud-pubsub"
 description = "Google Cloud Pub/Sub API client library"
-version = "1.7.1"
+version = "1.7.2"
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'
@@ -35,6 +35,7 @@
     "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
     "grpc-google-iam-v1 >= 0.12.3, < 0.13dev",
     'enum34; python_version < "3.4"',
+    "protobuf<4.0.0dev",
 ]
 extras = {}