diff --git a/global_license_change.py b/global_license_change.py
index 23ad071..cc9abfd 100644
--- a/global_license_change.py
+++ b/global_license_change.py
@@ -1,3 +1,6 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3
+
 import requests
 
 # taken from https://forgejo.skynet.ie/Skynet/actions-deploy-to-skynet/src/branch/main/LICENSE