Due to life circumstances, I had neglected my home Gitlab instance. I logged in the other day to perform some “quick” maintenance. Unfortunately, I found that I was more behind than expected. So much so, that I would need to perform a double upgrade of Gitlab going from 16.1 to 16.3 then ultimately to 16.6. After running a gitlab reconfigure, I found the Let’s Encrypt certs required an update. After making the required DNS and firewall changes, I was able to complete the necessary cert updates.