Fail to upgrade 8.11.4

For a number of reasons not worth mentioning, we are now with gitlab-ce 8.11.4-ce.0, Iknow, its a bit old.

Running on an Ubuntu server 16.04.3, via apt, is available an upgrade yo the gitlab-ce package that ends like:

gitlab preinstall:

gitlab preinstall: Your version of PostgreSQL is no longer supported. Please upgrade your PostgreSQL version.

gitlab preinstall: Check https://docs.gitlab.com/omnibus/update/#updating-gitlab-100-or-newer for details.

gitlab preinstall:

gitlab preinstall: Upgrade failed. Retry the upgrade after upgrading your PostgreSQL version. dpkg: error al procesar el archivo /var/cache/apt/archives/gitlab-ce_10.0.3-ce.0_amd64.deb (--unpack): el subproceso script pre-installation nuevo devolvió el código de salida de error 1

gitlab: Thank you for installing GitLab!

gitlab: To configure and start GitLab, RUN THE FOLLOWING COMMAND:

sudo gitlab-ctl reconfigure

gitlab: GitLab should be reachable at http://git.utn.ac.cr

gitlab: Otherwise configure GitLab for your system by editing /etc/gitlab/gitlab.rb file

gitlab: And running reconfigure again.

gitlab:

gitlab: For a comprehensive list of configuration options please see the Omnibus GitLab readme

gitlab: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md

gitlab:

I already try to run an upgrade on postgresql using this from your documentation:

sudo gitlab-ctl pg-upgrade

But it seems my gitlab-ctl is old enough it doesnt recognize the "pg-upgrade". The requirement according to the docs is be running the latest gitlab-ce, but how can i do that when if fails to install because i need to upgrade postgresql, and the way to update postgresql is not supported by the version i am running, seems to me i am on some kind of loop, am i?

Is there another way to upgrade the postgreSql installed with my gitlab?

regards