diff --git a/utils/requirements3.txt b/utils/requirements3.txt
index c867652..99ce1cb 100644
--- a/utils/requirements3.txt
+++ b/utils/requirements3.txt
@@ -5,7 +5,7 @@ torchtext==0.3.1
 sklearn==0.0
 numpy==1.16.4
 setuptools==41.0.1
-protobuf==3.9.0
+protobuf==3.15.0
 boto3==1.9.192
 tensorflow==1.14.0
 s3fs==0.3.0