<a id="how-to-upgrade"></a>

# How to upgrade

Upgrade the DNS charms to the latest revision with the `juju refresh` command.

### `bind`

```default
juju refresh bind
```

### `dns-policy`

```default
juju refresh dns-policy
```

### `dns-integrator`

```default
juju refresh dns-integrator
```

### `dns-resolver`

```default
juju refresh dns-resolver
```

### `dns-secondary`

```default
juju refresh dns-secondary
```

Backups are not required before upgrading any of the charms;
any set configurations or relations should remain intact.