diff --git a/requirements.txt b/requirements.txt
index 39bc9b9..e963b02 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,4 +16,4 @@ six==1.11.0
 slackclient==1.2.1
 urllib3==1.23
 websocket-client==0.48.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3