diff --git a/requirements.txt b/requirements.txt
index 8cbbadc..564ecd6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ parso==0.1.0
 pickleshare==0.7.4
 pluggy==0.6.0
 prompt-toolkit==1.0.15
-protobuf==3.1.0
+protobuf==3.18.3
 py==1.5.2
 Pygments==2.2.0
 pymongo==3.5.1