diff --git a/requirements.txt b/requirements.txt
index eb45e1e..9caec5c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -122,7 +122,7 @@ urllib3==1.24.1
 wcwidth==0.1.7
 webencodings==0.5.1
 websocket-client==0.55.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 whichcraft==0.5.2
 widgetsnbextension==3.4.2
 wrapt==1.11.1