diff --git a/requirements.txt b/requirements.txt
index de77a3863d..bddc495486 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ monotonic==1.5
 nestedcontext==0.0.4
 oauth2client==4.1.3
 orderedmultidict==1.0.1
-protobuf==3.9.1
+protobuf==6.33.5
 puremagic==1.4
 pyasn1==0.4.7
 pyasn1-modules==0.2.6