To upgrade your Debian 11 system and ensure the relevance of its packages, start by using the command sudo apt update. This allows your system to update the package lists, providing up-to-date information on available updates.
Next, execute the command sudo apt upgrade to update all installed packages to their latest versions. This step ensures that you are using the latest fixes and improvements provided by package developers.
To complete the update process and account for possible changes in package dependencies, run sudo apt dist-upgrade.