diff --git a/packages/ml-deploy/requirements.txt b/packages/ml-deploy/requirements.txt
index 98ca1a2..fa09c44 100644
--- a/packages/ml-deploy/requirements.txt
+++ b/packages/ml-deploy/requirements.txt
@@ -26,7 +26,7 @@ numpy==1.18.5
 oauthlib==3.1.0
 opt-einsum==3.3.0
 Pillow==8.0.0
-protobuf==3.13.0
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 PyYAML==5.3.1