diff --git a/requirements.txt b/requirements.txt
index 683ced1..234f721 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Flask-WTF==0.14.2
 Jinja2==2.9.5
 MarkupSafe==0.23
 WTForms==2.1
-Werkzeug==0.11.15
+Werkzeug==0.15.3
 cffi==1.9.1
 click==6.7
 cryptography==1.7.2