diff --git a/requirements.txt b/requirements.txt
index a186f2f..46430a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,5 +25,5 @@ requests==2.18.4
 six==1.11.0
 traitlets==4.3.2
 urllib3==1.22
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 gunicorn