# environments.<name>.ttl

> How long a preview environment lives after its last push.

How long a preview environment lives after its last push.

- **Type:** [duration](/docs/manifest/#duration)
- **Since:** manifest v1

## Example

```yaml
environments:
  production:
    ttl: 72h
```

## See also

- [environments](/docs/manifest/environments/): all fields of `environments`
- [guv.yaml reference](/docs/manifest/)