diff --git a/python/Mytodolist/requirements.txt b/python/Mytodolist/requirements.txt
index a5c5ce3..c8f61cd 100644
--- a/python/Mytodolist/requirements.txt
+++ b/python/Mytodolist/requirements.txt
@@ -236,7 +236,7 @@ virtualenv==16.5.0
 wcwidth==0.1.7
 webencodings==0.5.1
 websockets==7.0
-Werkzeug==0.14.1
+Werkzeug==0.15.5
 widgetsnbextension==3.4.1
 win-inet-pton==1.1.0
 win-unicode-console==0.5