> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# fly volumes update

Update a volume for an app. Volumes are persistent storage for
Fly Machines.

## Usage

```
fly volumes update <volume id> [flags]
```

## Options

```
  -a, --app string               Application name
  -c, --config string            Path to application configuration file
  -h, --help                     help for update
  -j, --json                     JSON output
      --scheduled-snapshots      Activate/deactivate scheduled automatic snapshots
      --snapshot-retention int   Snapshot retention in days
```

## Global Options

```
  -t, --access-token string   Fly API Access Token
      --debug                 Print additional logs and traces
      --verbose               Verbose output
```

## See Also

* [fly volumes](/flyctl/cmd/fly_volumes)	 - Manage Fly Volumes.