diff --git a/requirements.txt b/requirements.txt
index e6c876c..7ec36ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ Jinja2==2.11.2
 MarkupSafe==1.1.1
 monotonic==1.5
 passlib==1.7.2
-protobuf==3.12.4
+protobuf==3.18.3
 pycparser==2.20
 pygate-grpc==0.0.11
 python-engineio==3.13.2