diff --git a/requirements.txt b/requirements.txt
index a64ee14..8c823d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -94,7 +94,7 @@ Twisted==17.5.0
 urllib3==1.23
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.0
 xlrd==1.1.0
 zope.interface==4.5.0