This gem has not been maintained and has very little usage. We therefore plan to remove support for this authentication method and recommend using the Kerberos [SPNEGO](https://en.wikipedia.org/wiki/SPNEGO) integration instead. You can follow the [upgrade instructions](https://docs.gitlab.com/ee/integration/kerberos.html#upgrading-from-password-based-to-ticket-based-kerberos-sign-ins) to upgrade from the `omniauth-kerberos` integration to the supported one.