diff --git a/requirements.txt b/requirements.txt
index e31ac79..09e7edc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,5 +28,5 @@ retrying==1.3.3
 six==1.11.0
 traitlets==4.3.2
 urllib3==1.23
-Werkzeug==0.14.1
+Werkzeug==0.15.5
 wincertstore==0.2