diff --git a/requirements.txt b/requirements.txt
index ad8e133..6ed380c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ html5lib==0.9999999
 mock==2.0.0
 numpy==1.14.2
 pbr==3.1.1
-protobuf==3.5.2
+protobuf==3.15.0
 scipy==1.0.1
 six==1.11.0
 tensorboard==1.6.0