diff --git a/README.md b/README.md
index ad9bb137..11e43d37 100644
--- a/README.md
+++ b/README.md
@@ -706,7 +706,7 @@ Below is the complete list of available options that can be used to customize yo
 
 - **GITLAB_HOST**: The hostname of the GitLab server. Defaults to `localhost`
 - **GITLAB_PORT**: The port of the GitLab server. Defaults to `80` for plain http and `443` when https is enabled.
-- **GITLAB_TIMEZONE**: Configure the timezone for the gitlab application. This configuration does not effect cron jobs. Defaults to `UTC`.
+- **GITLAB_TIMEZONE**: Configure the timezone for the gitlab application. This configuration does not effect cron jobs. Defaults to `UTC`. See the list of [acceptable values](http://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html).
 - **GITLAB_ROOT_PASSWORD**: The password for the root user. Defaults to `5iveL!fe`.
 - **GITLAB_EMAIL**: The email address for the GitLab server. Defaults to `example@example.com`.
 - **GITLAB_EMAIL_DISPLAY_NAME**: The name displayed in emails sent out by the GitLab mailer. Defaults to `GitLab`.