diff --git a/bin/Powheg/check_dag_success.py b/bin/Powheg/check_dag_success.py
index 741d779b47b..d0cb4bc4585 100755
--- a/bin/Powheg/check_dag_success.py
+++ b/bin/Powheg/check_dag_success.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import sys
 import re
 
@@ -34,4 +34,4 @@
 if success_rate > 0.8:
     sys.exit(0)
 else:
-    sys.exit(1)
\ No newline at end of file
+    sys.exit(1)