diff --git a/requirements.txt b/requirements.txt
index 3044f7a..75f0d24 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -80,7 +80,7 @@ Twisted==17.1.0
 urllib3==1.23
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.15.2
+Werkzeug==0.15.3
 widgetsnbextension==3.4.1
 win-inet-pton==1.0.1
 win-unicode-console==0.5