# How to upgrade Before updating the charm you need to back up the database using the MySQL charm’s `create-backup` action. ```bash juju run mysql/leader create-backup ``` Additional information can be found about backing up in [the MySQL documentation](https://canonical.com/data/mysql/docs/8.0/how-to/back-up-and-restore/create-a-backup/#create-a-backup). Then you can upgrade the WordPress charm: ```default juju refresh wordpress-k8s ``` After upgrading the WordPress charm you need to update the database schema: ```default juju run wordpress-k8s/0 update-database ```