I want to change my Repository Root URL

I need to change this IP address.

I have updated new ip address and form /etc/gitlab/gitlab.rb file

## GitLab URL ##! URL on which GitLab will be reachable. ##! For more details on configuring external_url see: ##! https://docs.gitlab.com/omnibus/settings/configuration.html#configuring-the-external-url-for-gitlab external_url 'http://172.16.11.206'

after i have done this run sudo gitlab-ctl reconfigure But still its not changed please help asap.