diff --git a/requirements.txt b/requirements.txt
index 2c417004302..b6f9d0ab298 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ httplib2>=0.7.5 # MIT
 iso8601>=0.1.11 # MIT
 ipaddress>=1.0.7;python_version<'3.3' # PSF
 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
 oauth2client!=4.0.0,>=1.5.0 # Apache-2.0
 oslo.config!=3.18.0,>=3.14.0 # Apache-2.0