diff --git a/requirements.txt b/requirements.txt
index fd9e7d1f8..e42e3ca70 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ apscheduler # MIT License
 enum34;python_version=='2.7' or python_version=='2.6' or python_version=='3.3' # BSD
 jsonpatch>=1.1 # BSD
 keystoneauth1>=2.16.0 # Apache-2.0
-keystonemiddleware!=4.5.0,>=4.2.0 # Apache-2.0
+keystonemiddleware>=4.12.0 # Apache-2.0
 lxml>=2.3 # BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.cache>=1.5.0 # Apache-2.0