diff --git a/dispatcher/requirements.txt b/dispatcher/requirements.txt
index da8bb861..b4d39c15 100644
--- a/dispatcher/requirements.txt
+++ b/dispatcher/requirements.txt
@@ -30,7 +30,7 @@ Markdown==3.2.1
 msgpack==1.0.0
 mysql-connector-python==8.0.19
 mysqlclient==1.4.6
-protobuf==3.11.3
+protobuf==3.18.3
 psycopg2==2.8.5
 pyasn1==0.4.8
 pyasn1-modules==0.2.8