diff --git a/base-container/requirements.txt b/base-container/requirements.txt
index fc8d960..80937b3 100644
--- a/base-container/requirements.txt
+++ b/base-container/requirements.txt
@@ -5,7 +5,7 @@ google-cloud-datastore==1.1.0
 google-cloud-storage==1.3.2
 google-auth
 oauth2client==4.0.0
-protobuf==3.0.0
+protobuf==3.18.3
 unittest2
 mock
 requests