diff --git a/keras-assignment/requirements.txt b/keras-assignment/requirements.txt
index 7c0c218..e9700ed 100644
--- a/keras-assignment/requirements.txt
+++ b/keras-assignment/requirements.txt
@@ -9,7 +9,7 @@ Keras-Applications==1.0.7
 Keras-Preprocessing==1.0.9
 Markdown==3.1.1
 numpy==1.16.3
-protobuf==3.7.1
+protobuf==3.15.0
 PyYAML==5.1
 scipy==1.3.0
 six==1.12.0