# Extend Volume (/volumes/Volumes_extend)

Extend a volume's size within an app using the details provided in the request body.


`PUT /apps/{app_name}/volumes/{volume_id}/extend`

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `app_name` | path | `string` | Yes | Fly App Name |
| `volume_id` | path | `string` | Yes | Volume ID |

## Request Body

Type: `ExtendVolumeRequest`

| Property | Type | Required | Description |
| --- | --- | --- | --- |
| `size_gb` | `integer` | No |  |

## Responses

| Status | Description | Schema |
| --- | --- | --- |
| `200` | OK | `ExtendVolumeResponse` |

The full machine-readable OpenAPI spec is available at /openapi.json.