Update from GitLab 8.5 to 8.12


I have a gitlab 8.5 running on my debian server (32 bits)

I would like to update to the latest version.

Should I update from each version, following all the tutorials here : https://gitlab.com/gitlab-org/gitlab-ce/tree/master/doc/update or is it safe to do only the last one, as they all seem pretty the same.

Thanks in advance