diff --git a/requirements.txt b/requirements.txt
index a52e2cf..336da4b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,4 @@ python-dateutil==2.4.2
 pytz==2015.6
 scipy==0.15.1
 six==1.10.0
-Werkzeug==0.11.2
+Werkzeug==0.15.3