diff --git a/setup.py b/setup.py
index d785e1c..c6a5fc4 100644
--- a/setup.py
+++ b/setup.py
@@ -81,7 +81,7 @@ def debian_etc_hack(root):
 
     install_requires=(
         'redis',
-        'werkzeug',
+        'werkzeug<1',
         'python-dateutil',
         'pyyaml',
         'sqlalchemy',