diff --git a/requirements_frontend.txt b/requirements_frontend.txt
index 9223c87..de7b387 100644
--- a/requirements_frontend.txt
+++ b/requirements_frontend.txt
@@ -3,7 +3,7 @@ google==2.0.2
 grpcio==1.20.0
 numpy==1.16.2
 onnx==1.4.1
-protobuf==3.7.1
+protobuf==3.18.3
 requests==2.21.0
 sanic==19.3.1
 tensorflow==1.13.1