diff --git a/requirements.txt b/requirements.txt
index 6923d6e..21eb7c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ voluptuous>=0.8.9  # BSD License
 keystoneauth1>=2.14.0  # Apache-2.0
 python-keystoneclient>=3.8.0  # Apache-2.0
 six>=1.9.0  # MIT
-kombu>=3.0.25,<4.0.0  # BSD
+kombu>=4.0.0,!=4.0.2  # BSD
 oslo.serialization>=1.10.0  # Apache-2.0
 oslo.config>=3.14.0  # Apache-2.0
 oslo.log>=3.11.0  # Apache-2.0