diff --git a/requirements.txt b/requirements.txt
index 8903501f6..3253dda58 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ croniter>=0.3.4 # MIT License
 futures>=3.0;python_version=='2.7' or python_version=='2.6'  # BSD
 futurist>=0.11.0  # Apache-2.0
 jsonschema!=2.5.0,<3.0.0,>=2.0.0
-keystonemiddleware>=2.2.0
+keystonemiddleware>=2.2.0,!=4.19.0
 gnocchiclient>=3.1.0  # Apache-2.0
 lxml>=2.3
 oslo.db>=4.8.0,!=4.13.1,!=4.13.2,!=4.15.0 # Apache-2.0