diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77f43d8..d876dab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.7.2](https://github.com/googleapis/python-functions/compare/v0.7.1...v0.7.2) (2022-06-08)
+
+
+### Bug Fixes
+
+* **deps:** require protobuf<4.0.0 on v0 branch ([#189](https://github.com/googleapis/python-functions/issues/189)) ([aadf006](https://github.com/googleapis/python-functions/commit/aadf0060b87cb4083164486641530f513e44b980))
+
 ### [0.7.1](https://github.com/googleapis/python-functions/compare/v0.7.0...v0.7.1) (2022-04-04)
 
 
diff --git a/setup.py b/setup.py
index a4d1c21..337e0ea 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
 import os
 import setuptools  # type: ignore
 
-version = "0.7.1"
+version = "0.7.2"
 
 package_root = os.path.abspath(os.path.dirname(__file__))
 
@@ -46,9 +46,10 @@
     include_package_data=True,
     install_requires=(
         "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
-        "proto-plus >= 1.10.0",
-        "packaging >= 14.3",
+        "proto-plus >= 1.10.0, <2.0.0dev",
+        "packaging >= 14.3, <22.0.0dev",
         "grpc-google-iam-v1 >= 0.12.3, < 0.13dev",
+        "protobuf<4.0.0dev",
     ),
     python_requires=">=3.6",
     scripts=["scripts/fixup_functions_v1_keywords.py",],