diff --git a/requirements.txt b/requirements.txt
index c3e9b76..fefe4f8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ Jinja2==2.11.2
 Mako==1.1.2
 MarkupSafe==1.1.1
 mysql-connector-python==8.0.20
-protobuf==3.12.2
+protobuf==3.18.3
 pyaml==20.4.0
 pycparser==2.20
 PyMySQL==0.9.3