diff --git a/requirements.txt b/requirements.txt
index aeb0194..d2cd681 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ oauth2client==3.0.0
 packaging==20.9
 pandas==1.2.4
 pluggy==0.13.1
-protobuf==3.19.0
+protobuf==3.19.5
 py==1.10.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8