diff --git a/requirements.txt b/requirements.txt
index 15f4f61..f888c8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,4 +36,4 @@ pytz==2017.2
 requests==2.14.2
 six==1.10.0
 SQLAlchemy==1.1.4
-Werkzeug==0.11.13
+Werkzeug==0.15.3