diff --git a/requirements.txt b/requirements.txt
index d04801a..c1e1a36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -71,5 +71,5 @@ tqdm==4.19.4
 traitlets==4.3.2
 urllib3==1.22
 wcwidth==0.1.7
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 widgetsnbextension==3.1.3