diff --git a/requirements.txt b/requirements.txt
index e7d9c5a..8157cdd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ oauth2client==4.0.0
 packaging==16.8
 praw==6.1.1
 prawcore==1.0.1
-protobuf==3.15.8
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyee==8.1.0