diff --git a/requirements.txt b/requirements.txt
index 31374bf..fdba393 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Flask-WTF==0.10.3
 Jinja2>=2.8.1
 MarkupSafe==0.23
 WTForms==2.0.1
-Werkzeug==0.9.6
+Werkzeug==0.15.3
 aniso8601==0.92
 astroid==1.3.6
 boltons==0.6.3