# Updating Ubuntu
The current recommend host o/s for Enhance (control panel and secondary servers) is Ubuntu 22.04 LTS.
If your server are running Ubuntu 20.04 LTS, some features including Hard system resource limits feature will not work.
Check the integrity of your backups before. If you are updating your Enhance control panel server, we recommend making a block level backup of the storage before proceeding.
To update Ubuntu 22.04 LTS:
Note that your websites and services will be offline during at least some of the update process since the dist-upgrade will include an update to docker. Enhance should recover automatically from the docker update.
- Log in to your server with SSH as root and run
Follow the prompts. If asked to replace files in /etc/ufw with those from the package, we recommend that you say no.
- At the end of the process, reboot the system