It is strongly recommended to create a backup before starting the update process. If you have important data, create and restore a backup to ensure that everything works properly.
You can upgrade the application only without modifying any other stack components using the steps below.
Browse to the Neos website.
Browse to the “Installation via Composer” section.
$ curl -s https://getcomposer.org/installer | php
Navigate to the Neos installation directory:
$ cd /opt/bitnami/neos
Install the Neos base distribution with all dependencies:
$ composer update neos/neos-base-distribution