diff --git a/requirements.txt b/requirements.txt
index b6286b4..106ea8d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,4 +33,4 @@ sqlalchemy==0.7.11dev
 statsmodels==0.5.0
 virtualenv==1.9.1
 virtualenvwrapper-win==1.1.5
-werkzeug==0.9.4
+werkzeug==0.15.3