diff --git a/CHANGELOG.md b/CHANGELOG.md
index b26af28a62..9f2775708f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@
 [1]: https://pypi.org/project/google-cloud-firestore/#history
 
 
+## [1.9.2](https://github.com/googleapis/python-firestore/compare/v1.9.1...v1.9.2) (2022-06-08)
+
+
+### Bug Fixes
+
+* **deps:** require protobuf<4.0.0 on v1 branch ([#604](https://github.com/googleapis/python-firestore/issues/604)) ([fb76a71](https://github.com/googleapis/python-firestore/commit/fb76a71663c2684e8f8af824c7d4873589eec86b))
+
 ### [1.9.1](https://github.com/googleapis/python-firestore/compare/v1.9.0...v1.9.1) (2022-04-05)
 
 
diff --git a/setup.py b/setup.py
index b797712401..4b541eb823 100644
--- a/setup.py
+++ b/setup.py
@@ -22,12 +22,13 @@
 
 name = "google-cloud-firestore"
 description = "Google Cloud Firestore API client library"
-version = "1.9.1"
+version = "1.9.2"
 release_status = "Development Status :: 5 - Production/Stable"
 dependencies = [
     "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
     "google-cloud-core >= 1.4.1, < 2.0dev",
     "pytz",
+    "protobuf<4.0.0dev",
 ]
 extras = {}