diff --git a/utils/python/nexus_nei2019_linker.py b/utils/python/nexus_nei2019_linker.py
index 0ede0c1..809ee8a 100644
--- a/utils/python/nexus_nei2019_linker.py
+++ b/utils/python/nexus_nei2019_linker.py
@@ -1,3 +1,8 @@
+#!/usr/bin/env python
+"""
+Simple utility to link the appropriate NEI2019 date for the workflow.
+"""
+
 import os
 from datetime import datetime, timedelta
 from glob import glob