diff --git a/requirements.txt b/requirements.txt
index f585eb8..84a4dbf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,4 +19,4 @@ python-dateutil==2.5.3
 pytz==2016.6.1
 requests==2.10.0
 six==1.10.0
-Werkzeug==0.11.10
+Werkzeug==0.15.3