diff --git a/requirements.txt b/requirements.txt
index 3a31387..3b5d1df 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,4 +24,4 @@ requests==2.18.4
 six==1.11.0
 traitlets==4.3.2
 urllib3==1.22
-Werkzeug==0.14.1
+Werkzeug==0.15.3