diff --git a/requirements.txt b/requirements.txt
index fadaefb7..193e55a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ numpy==1.15.1
 pandas==0.23.4
 pkg-resources==0.0.0
 pluggy==0.8.0
-protobuf==3.6.1
+protobuf==3.18.3
 py==1.7.0
 PyGithub==1.43.3
 PyJWT==1.6.4