diff --git a/requirements.txt b/requirements.txt
index 7783cc4..a64a0e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,5 +21,5 @@ six==1.11.0
 slackclient==1.3.0
 urllib3==1.24
 websocket-client==0.53.0
-Werkzeug==0.14.1
+Werkzeug==0.15.3