This article is a summary of the activities described here: https://linuxiac.com/how-to-upgrade-to-debian-13-trixie-from-12-bookworm/ DISCLAIMER The steps here has been tested but I take no responsibility for your upgrade process. This post is only me sharing the experience following the referenced guide. This is a redacted version of the full article referenced above. For detailed information you are encouraged to visit that. 1 - Update your current version and weed out removed packages sudo apt update sudo apt upgrade sudo apt full-upgrade sudo apt --purge autoremove 2 - Reboot sudo reboot 3 - Check your version cat /etc/debian_version result: 12.