diff --git a/requirements.txt b/requirements.txt
index cf1639c..7d01fd0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,4 +29,4 @@ pytz==2017.3
 six==1.11.0
 traitlets==4.3.2
 
-Werkzeug==0.14.1
+Werkzeug==0.15.3