diff --git a/requirements.txt b/requirements.txt
index 9c95911a1..2f044c38c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ oslo.db>=4.27.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.context>=2.19.2 # Apache-2.0
 oslo.policy>=1.30.0 # Apache-2.0
-Werkzeug>=0.7 # BSD License
+Werkzeug>=0.9 # BSD License
 python-memcached>=1.56 # PSF
 tooz>=1.58.0 # Apache-2.0
 debtcollector>=1.2.0 # Apache-2.0