diff --git a/setup.py b/setup.py
index 36103c13f..ab64daa6f 100755
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python3.5
 
 from setuptools import setup, find_packages
 import sys