diff --git a/keystone/server/flask/application.py b/keystone/server/flask/application.py
index ddde080cfa..ba8ca8360a 100644
--- a/keystone/server/flask/application.py
+++ b/keystone/server/flask/application.py
@@ -17,13 +17,7 @@ import flask
 import oslo_i18n
 from oslo_log import log
 from oslo_middleware import healthcheck
-
-try:
-    # werkzeug 0.15.x
-    from werkzeug.middleware import dispatcher as wsgi_dispatcher
-except ImportError:
-    # werkzeug 0.14.x
-    import werkzeug.wsgi as wsgi_dispatcher
+from werkzeug.middleware import dispatcher
 
 from keystone.api import auth
 from keystone.api import credentials
@@ -238,7 +232,7 @@ def application_factory(name='public'):
     # Use the simple form of the dispatch middleware, no extra logic needed
     # for legacy dispatching. This is to mount /healthcheck at a consistent
     # place
-    app.wsgi_app = wsgi_dispatcher.DispatcherMiddleware(
+    app.wsgi_app = dispatcher.DispatcherMiddleware(
         app.wsgi_app, {'/healthcheck': hc_app}
     )
     return app
diff --git a/keystone/server/flask/core.py b/keystone/server/flask/core.py
index 42d28468a8..f4fadb0580 100644
--- a/keystone/server/flask/core.py
+++ b/keystone/server/flask/core.py
@@ -15,13 +15,7 @@ import os
 
 from oslo_log import log
 import stevedore
-
-try:
-    # werkzeug 0.15.x
-    from werkzeug.middleware import proxy_fix
-except ImportError:
-    # werkzeug 0.14.x
-    from werkzeug.contrib import fixers as proxy_fix
+from werkzeug.middleware import proxy_fix
 
 from keystone.common import profiler
 import keystone.conf
diff --git a/requirements.txt b/requirements.txt
index 3b03fc21d4..aa980f262a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,3 +37,4 @@ jsonschema>=3.2.0 # MIT
 pycadf!=2.0.0,>=1.1.0 # Apache-2.0
 msgpack>=0.5.0 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
+Werkzeug>=0.15.0 # BSD License