diff --git a/requirements.txt b/requirements.txt
index 24449c4..ca33c55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -217,7 +217,7 @@ unicodecsv==0.14.1
 urllib3==1.23
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.1
 win-inet-pton==1.0.1
 win-unicode-console==0.5