diff --git a/requirements.txt b/requirements.txt
index 4eaa05d..d5c8c15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ multidict==4.7.6
 numpy==1.19.0
 oauth2client==4.1.3
 pandas==1.0.5
-protobuf==3.12.4
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pymongo==3.11.0