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

# Update An ACL

Update an Access Control List (ACL) for a particular service and version.

**Note**: Using this action requires Engineer-level permissions or higher.

> [!NOTE]
>
> External Documentation
>
> To learn more, visit the [Fastly documentation](https://www.fastly.com/documentation/reference/api/acls/acl/#update-acl).

## Parameters

| Parameter | Description |
| - | - |
| ACL's Current Name | The name of the ACL. Must start with a letter or a number and contain only letters, numbers, underscores and whitespace. |
| ACL's New Name | The new name for the ACL. |
| Service ID | The unique identifier of the service. |
| Version ID | The unique identifier of the version. |

## Example Output

```json theme={"dark"}
{
	"version": "1",
	"name": "updated-test-acl",
	"service_id": "SU1Z0isxPaozGVKXdv0eY",
	"id": "2cFflPOskFLhmnZJEKU7y6",
	"created_at": "2020-04-21T18:14:32.000Z",
	"deleted_at": null,
	"updated_at": "2020-04-21T18:14:32.000Z"
}
```