diff --git a/requirements.txt b/requirements.txt
index af4bf83..769038f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -87,7 +87,7 @@ urllib3==1.23
 virtualenv==16.0.0
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.2
 WTForms==2.2.1
 zope.interface==4.5.0