diff --git a/spark-tensorflow/trainer/requirements.txt b/spark-tensorflow/trainer/requirements.txt
index 3ec32ea..fa274b8 100644
--- a/spark-tensorflow/trainer/requirements.txt
+++ b/spark-tensorflow/trainer/requirements.txt
@@ -5,7 +5,7 @@ Markdown==2.2.0
 mock==2.0.0
 numpy==1.13.0
 pbr==3.0.1
-protobuf==3.3.0
+protobuf==4.25.8
 six==1.10.0
 tensorflow==1.15.4
 Werkzeug==0.15.3