diff --git a/requirements.txt b/requirements.txt
index 29f061c..8d880ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ billiard==3.5.0.4
 celery==4.2.0
 kombu==4.2.1
 mysql-connector-python==8.0.11
-protobuf==3.6.0
+protobuf==3.18.3
 pytz==2018.5
 six==1.11.0
 vine==1.1.4