diff --git a/BERT/bert_using_tf1/requirements.txt b/BERT/bert_using_tf1/requirements.txt
index a9520db..fcb6eb7 100644
--- a/BERT/bert_using_tf1/requirements.txt
+++ b/BERT/bert_using_tf1/requirements.txt
@@ -7,7 +7,7 @@ Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.0
 Markdown==3.1.1
 numpy==1.17.4
-protobuf==3.11.0
+protobuf==3.15.0
 six==1.13.0
 tensorboard==1.11.0
 tensorflow-gpu==1.11.0