diff --git a/bin/cmmde.py b/bin/cmmde.py
index 8ddfef6..cdef5aa 100755
--- a/bin/cmmde.py
+++ b/bin/cmmde.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import sys
 import os
 import argparse