diff --git a/setup.py b/setup.py
index 48f7ce13..19bfec30 100644
--- a/setup.py
+++ b/setup.py
@@ -79,8 +79,8 @@
         "requests>=2.2.1,<3.0",
         "pycontracts>=1.7.6,<2.0",
         "celery>=4.0,<5.0",
-        "gevent>=1.0.2,<2.0",
-        "redis>=2.9.1,<3.0",
+        "gevent>=1.0.2,<21.0",
+        "redis>=2.9.1,<4.0",
         "six>=1.9.0,<2.0"
     ],
 )