diff --git a/templates/acmed/acme-dns-auth.py.erb b/templates/acmed/acme-dns-auth.py.erb
index 2913db04c..0fac261c4 100755
--- a/templates/acmed/acme-dns-auth.py.erb
+++ b/templates/acmed/acme-dns-auth.py.erb
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import json
 import os
 import requests