diff --git a/chat/client-libraries/cloud/requirements.txt b/chat/client-libraries/cloud/requirements.txt
index bf63a182..70df7a6b 100644
--- a/chat/client-libraries/cloud/requirements.txt
+++ b/chat/client-libraries/cloud/requirements.txt
@@ -1,3 +1,3 @@
 google_auth_oauthlib==1.2.0
-protobuf==4.21.12
+protobuf==4.25.8
 google-apps-chat==0.1.9