diff --git a/gravity/gravity-backend/requirements.txt b/gravity/gravity-backend/requirements.txt
index b5bcb1c..3d553b8 100644
--- a/gravity/gravity-backend/requirements.txt
+++ b/gravity/gravity-backend/requirements.txt
@@ -13,4 +13,4 @@ pyparsing==2.1.10
 python-dateutil==2.6.0
 pytz==2016.10
 six==1.10.0
-Werkzeug==0.11.15
+Werkzeug==0.15.3