diff --git a/requirements.txt b/requirements.txt
index 68eed7e..8b4feb4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ MarkupSafe==1.1.1
 more-itertools==8.2.0
 packaging==20.3
 pluggy==0.13.1
-protobuf==3.6.1
+protobuf==3.18.3
 py==1.8.1
 PyMySQL==0.9.3
 pyparsing==2.4.7