diff --git a/requirements.txt b/requirements.txt
index 928cb5c..6880d7f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ gunicorn==19.6.0
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23
-Werkzeug==0.11.10
+Werkzeug==0.15.5