diff --git a/requirements.txt b/requirements.txt
index bb46eed..a73a412 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ packaging==20.1
 pathspec==0.7.0
 pluggy==0.13.1
 pre-commit==1.20.0
-protobuf==3.15.6
+protobuf==3.18.3
 py==1.8.1
 pyasn1==0.4.8
 pyasn1-modules==0.2.8