diff --git a/packaging/dotnet-core/prepare.py b/packaging/dotnet-core/prepare.py
old mode 100644
new mode 100755
index 9090c874..54151f1b
--- a/packaging/dotnet-core/prepare.py
+++ b/packaging/dotnet-core/prepare.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import os.path
 import re