diff --git a/functions/v2/datastore/hello-datastore/requirements.txt b/functions/v2/datastore/hello-datastore/requirements.txt
index 35e86dbfbc5..b05fd5e7e08 100644
--- a/functions/v2/datastore/hello-datastore/requirements.txt
+++ b/functions/v2/datastore/hello-datastore/requirements.txt
@@ -2,5 +2,5 @@ functions-framework==3.9.2
 google-events==0.14.0
 google-cloud-datastore==2.20.2
 google-api-core==2.17.1
-protobuf==4.25.8
+protobuf==4.25.9
 cloudevents==1.11.0
diff --git a/functions/v2/firebase/hello-firestore/requirements.txt b/functions/v2/firebase/hello-firestore/requirements.txt
index b2d03f648de..cf3f5cb7c0e 100644
--- a/functions/v2/firebase/hello-firestore/requirements.txt
+++ b/functions/v2/firebase/hello-firestore/requirements.txt
@@ -1,5 +1,5 @@
 functions-framework==3.9.2
 google-events==0.14.0
 google-api-core==2.17.1
-protobuf==4.25.6
+protobuf==4.25.9
 cloudevents==1.11.0
\ No newline at end of file
diff --git a/functions/v2/firebase/upper-firestore/requirements.txt b/functions/v2/firebase/upper-firestore/requirements.txt
index cc5c66225f4..64b7931dea9 100644
--- a/functions/v2/firebase/upper-firestore/requirements.txt
+++ b/functions/v2/firebase/upper-firestore/requirements.txt
@@ -1,6 +1,6 @@
 functions-framework==3.9.2
 google-events==0.14.0
 google-api-core==2.17.1
-protobuf==4.25.6
+protobuf==4.25.9
 google-cloud-firestore==2.19.0
 cloudevents==1.11.0
\ No newline at end of file