diff --git a/requirements.txt b/requirements.txt
index 1c66bf2..c57cfda 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ pyparsing==2.2.0
 python-dateutil==2.6.0
 pytz==2016.7
 six==1.10.0
-Werkzeug==0.11.11
+Werkzeug==0.15.3