diff --git a/requirements.txt b/requirements.txt
index 972bf9f..990fd57 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,4 +11,4 @@ python-dateutil==2.5.3
 pytz==2016.4
 six==1.10.0
 SQLAlchemy==1.0.13
-Werkzeug==0.11.9
+Werkzeug==0.15.3