Upgrading via the Virtualmin UI
When a new version is available, you will see a message on the System Information page stating that there are Virtualmin package updates available.
Other packages may be listed too, depending on what is available to be updated. To install these updates, just click the Install All Updates Now button.
Upgrading from the command line
Installing all available updates can be done with the following command on RHEL/CentOS:
Or, on Debian/Ubuntu: