diff --git a/requirements.txt b/requirements.txt
index 299997a..0404d9d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ jinja2==2.11.2
 markupsafe==1.1.1
 packaging==20.4
 promise==2.3
-protobuf==3.14.0
+protobuf==3.18.3
 psycopg2==2.8.6
 pyasn1==0.4.8
 pyasn1-modules==0.2.8