diff --git a/setup.py b/setup.py
index 3616a40..e6170ff 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,8 @@
         'pip',
         'osconf',
         'itsdangerous<2',
-        'redis<3.6',
+        'redis<3.6;python_version<="2.7.18"',
+        'redis;python_version>"2.7.18"',
         'future',
     ],
     license='AGPL-3',