diff --git a/requirements.txt b/requirements.txt
index 829c973..7d0d4bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -217,7 +217,7 @@ urllib3==1.24.1
 wcwidth==0.1.7
 webencodings==0.5.1
 websocket-client==0.53.0
-Werkzeug==0.14.1
+Werkzeug==0.15.5
 wrapt==1.12.1
 wxPython==4.0.4
 xopen==0.5.0