Gitlab base url

I'm running Gitlab behind an Apache HTTPD SSL proxySo, Gitlab is running on http://example.com:80 and my proxy is serving this from https://example.com:443.Currently when I request password reset emails they provide a link to http://example.com not https://example.com

Does anyone know how to change the base URL to https://example.com while still running the gitlab instance over http?

Thanks,

Adam