diff --git a/requirements.txt b/requirements.txt
index e6d19e5..71d8277 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,5 +15,5 @@ requests==2.7.0
 six==1.9.0
 slackclient==0.15
 websocket-client==0.32.0
-Werkzeug==0.9.6
+Werkzeug==0.15.3
 wheel==0.24.0
diff --git a/setup.py b/setup.py
index ca50d22..ce51263 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ def read(fname):
         'six==1.9.0',
         'slackclient==0.15',
         'websocket-client==0.32.0',
-        'Werkzeug==0.9.6',
+        'Werkzeug==0.15.3',
         'wheel==0.24.0',
     ],
     include_package_data=True,