diff --git a/beam/requirements.txt b/beam/requirements.txt
index f04bfd72..04f96619 100644
--- a/beam/requirements.txt
+++ b/beam/requirements.txt
@@ -14,7 +14,7 @@ numpy==1.18.1
 oauth2client==3.0.0
 pbr==5.4.4
 pep517==0.8.1
-protobuf==3.11.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pymongo==3.10.1