diff --git a/setup.py b/setup.py
index bc991f3d..f3f53be2 100755
--- a/setup.py
+++ b/setup.py
@@ -42,6 +42,7 @@ packages = [
     'requests.packages.urllib3.contrib',
     'requests.packages.urllib3.util',
     'requests.packages.urllib3.packages.ssl_match_hostname',
+    'requests.packages.urllib3.packages.backports',
 ]
 
 requires = []