diff --git a/setup.cfg b/setup.cfg
index 42c7d8d7..97daad4c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -63,7 +63,7 @@ zookeeper =
 redis =
   redis>=2.10.0 # MIT
 workers =
-  kombu!=4.0.0,>=3.0.25 # BSD
+  kombu<4.0.0,>=3.0.25 # BSD
 eventlet =
   eventlet!=0.18.3,>=0.18.2 # MIT
 doc =