diff --git a/.jenkins/pytorch/win-test-helpers/download_image.py b/.jenkins/pytorch/win-test-helpers/download_image.py
index 1356ee43c78a..a9923a997275 100755
--- a/.jenkins/pytorch/win-test-helpers/download_image.py
+++ b/.jenkins/pytorch/win-test-helpers/download_image.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import os
 import sys
 import boto3
diff --git a/.jenkins/pytorch/win-test-helpers/upload_image.py b/.jenkins/pytorch/win-test-helpers/upload_image.py
index ebaf72c04bfa..80b365b40ed2 100755
--- a/.jenkins/pytorch/win-test-helpers/upload_image.py
+++ b/.jenkins/pytorch/win-test-helpers/upload_image.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import os
 import sys
 import boto3
diff --git a/caffe2/python/operator_test/lars_test.py b/caffe2/python/operator_test/lars_test.py
old mode 100755
new mode 100644
diff --git a/tools/flake8_hook.py b/tools/flake8_hook.py
index c4b5691195ca..d1c377449c36 100755
--- a/tools/flake8_hook.py
+++ b/tools/flake8_hook.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import sys
 
 from flake8.main import git