diff --git a/requirements.txt b/requirements.txt
index d18532c..57379c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -90,6 +90,6 @@ urllib3==1.24.1
 URLObject==2.4.3
 wcwidth==0.1.7
 webencodings==0.5.1
-Werkzeug==0.15.1
+Werkzeug==0.15.3
 widgetsnbextension==3.4.2
 wrapt==1.11.1