diff --git a/handson-ml-master/requirements.txt b/handson-ml-master/requirements.txt
index 7df1ca3..f100c01 100644
--- a/handson-ml-master/requirements.txt
+++ b/handson-ml-master/requirements.txt
@@ -25,7 +25,7 @@ numexpr==2.6.3
 numpy==1.13.1
 pandas==0.20.3
 Pillow==4.2.1
-protobuf==3.4.0
+protobuf==4.25.8
 psutil==5.3.1
 scikit-learn==0.19.0
 scipy==0.19.1