diff --git a/requirements.txt b/requirements.txt
index 40b970b..a9bf121 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,5 +50,5 @@ trollius==2.2
 urllib3==1.24.1
 virtualenv==16.1.0
 visitor==0.1.3
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 WTForms==2.2.1