diff --git a/setup.py b/setup.py
index 3ad86d2e9..54306c75f 100644
--- a/setup.py
+++ b/setup.py
@@ -77,6 +77,7 @@
           'click',
           'requests',
           'requests_futures',
+          'pywin32 >= 1.0;platform_system=="Windows"'
       ],
       extras_require={
           'test': test_requires,