diff --git a/Top Machine Learning Libraries/requirements.txt b/Top Machine Learning Libraries/requirements.txt
index 7fc72ad..a76694d 100644
--- a/Top Machine Learning Libraries/requirements.txt	
+++ b/Top Machine Learning Libraries/requirements.txt	
@@ -11,7 +11,7 @@ Markdown==3.0.1
 matplotlib==3.0.1
 numpy==1.15.3
 pkg-resources==0.0.0
-protobuf==3.6.1
+protobuf==3.18.3
 pyparsing==2.2.2
 python-dateutil==2.7.4
 scikit-learn==0.20.0