diff --git a/mlpractice_training/requirements.txt b/mlpractice_training/requirements.txt
index 783a888..1eebb5c 100644
--- a/mlpractice_training/requirements.txt
+++ b/mlpractice_training/requirements.txt
@@ -67,5 +67,5 @@ tornado==5.1.1
 traitlets==4.3.2
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.2