diff --git a/examples/reservations-bot-demo/cloud_function/requirements.txt b/examples/reservations-bot-demo/cloud_function/requirements.txt
index 5c21a42e..ac114d91 100644
--- a/examples/reservations-bot-demo/cloud_function/requirements.txt
+++ b/examples/reservations-bot-demo/cloud_function/requirements.txt
@@ -6,7 +6,7 @@ enum-compat==0.0.3
 googleapis-common-protos==1.52.0
 grpcio==1.53.2
 idna==2.10
-protobuf==3.18.3
+protobuf==4.25.8
 pycparser==2.20
 pydantic==1.6.2
 PyJWT==2.4.0