diff --git a/requirements.txt b/requirements.txt
index aaeaab6..ec1c6c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ Flask==0.12
 Flask-RESTful==0.3.5
 Jinja2==2.9.5
 MarkupSafe==1.0
-Werkzeug==0.12
+Werkzeug==0.15.3
 aniso8601==1.2.0
 appdirs==1.4.3
 certifi==2017.1.23