diff --git a/pip-sample/requirements.txt b/pip-sample/requirements.txt
index f4293304..fb79e2bf 100644
--- a/pip-sample/requirements.txt
+++ b/pip-sample/requirements.txt
@@ -61,6 +61,6 @@ urllib3==1.23
 virtualenv==16.0.0
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.14.1
+Werkzeug==0.15.5
 widgetsnbextension==3.4.2
 xlrd==1.1.0