diff --git a/requirements.txt b/requirements.txt
index f903fb5..aa45cb0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,4 +27,4 @@ six==1.11.0
 traitlets==4.3.2
 urllib3==1.22
 wcwidth==0.1.7
-Werkzeug==0.14.1
+Werkzeug==0.15.3