diff --git a/Configuration/PyReleaseValidation/scripts/das-selected-lumis.py b/Configuration/PyReleaseValidation/scripts/das-selected-lumis.py
index 72177c7b96c13..9edc6d9438779 100755
--- a/Configuration/PyReleaseValidation/scripts/das-selected-lumis.py
+++ b/Configuration/PyReleaseValidation/scripts/das-selected-lumis.py
@@ -1,4 +1,4 @@
-#!/bin/env python
+#!/usr/bin/env python3
 from __future__ import print_function
 import json , sys
 input_range = []