diff --git a/articles/keras-weight-transfer/neural-net/requirements.txt b/articles/keras-weight-transfer/neural-net/requirements.txt
index ce9ac2e..53294d0 100644
--- a/articles/keras-weight-transfer/neural-net/requirements.txt
+++ b/articles/keras-weight-transfer/neural-net/requirements.txt
@@ -8,7 +8,7 @@ html5lib==0.9999999
 Keras==2.1.2
 Markdown==2.6.11
 numpy==1.14.1
-protobuf==3.5.1
+protobuf==3.15.0
 PyYAML==3.12
 scipy==1.0.0
 six==1.11.0