diff --git a/slack/slack_bot/requirements.txt b/slack/slack_bot/requirements.txt
old mode 100755
new mode 100644
index a208051..0b700d5
--- a/slack/slack_bot/requirements.txt
+++ b/slack/slack_bot/requirements.txt
@@ -9,4 +9,4 @@ requests==2.20.0
 six==1.10.0
 slackclient==1.0.2
 websocket-client==0.37.0
-Werkzeug==0.14
+Werkzeug==0.15.3