diff --git a/setup.py b/setup.py
index 00b1076ae..09ffe8cb5 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,7 @@
 import codecs
 import os
 import re
+import sys
 
 from setuptools import find_packages, setup
 from setuptools.command.test import test as TestCommand