diff --git a/requirements.txt b/requirements.txt
index 99b3df3..d357a2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 Flask==0.12.2
 Jinja2==2.8
-Werkzeug==0.13
+Werkzeug==0.15.3
 # deploy
 gunicorn==19.5.0
 gevent