GitLab keeps asking for updates

Hello,

Currently I’m running GitLab 13.3.4 on my Raspberry Pi 4GB RAM. I’ve managed to install and use GitLab for a while now and I try to keep it as updated as possible. However, when I go to my admin page on GitLab it keeps saying there is a new update available. I’ve tried to find the answer on Google and here but there is no other topic open for this problem.

I’ve also tried to input sudo apt update in the terminal of the Raspberry Pi, but it says there are no new packages.

I hope you can tell me where I should look/update.