diff --git a/requirements.txt b/requirements.txt
index a0dfe81d..49d697e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ iso8601>=0.1.11 # MIT
 Jinja2>=2.8 # BSD License (3 clause)
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
 keystoneauth1>=2.1.0 # Apache-2.0
-keystonemiddleware!=4.1.0,>=4.0.0 # Apache-2.0
+keystonemiddleware!=4.1.0,!=4.5.0,>=4.0.0 # Apache-2.0
 oslo.config>=3.9.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.context>=2.2.0 # Apache-2.0