diff --git a/requirements.txt b/requirements.txt
index b9ea558..3e5515a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,5 +28,5 @@ requests==2.18.3
 six==1.10.0
 traitlets==4.3.2
 urllib3==1.22
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 wheel==0.26.0