diff --git a/requirements.txt b/requirements.txt
index 8c30639..90c188b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ mock==3.0.5
 mypy_extensions==0.4.3
 numpy==1.17.4
 ordereddict==1.1
-protobuf==3.10.0
+protobuf==3.18.3
 pymysql==0.9.3
 pyOpenSSL==19.0.0
 simplejson==3.16.0