# withExpiration

- Module: [Aspire.Hosting.DevTunnels](/reference/api/typescript/aspire.hosting.devtunnels.md)
- Version: `13.6.0`
- Kind: `method`
- Source: [GitHub](https://github.com/microsoft/aspire/tree/f4c27f2d43ddc1cacd0dd083b30d1fea1cee7a62)

Configures how long the tunnel can remain unused or unmodified before it expires.

## Definition

```typescript
interface DevTunnelResource {
  // ... omitted for brevity
  withExpiration(expirationHours: number): DevTunnelResource
}
```

## Parameters

- `expirationHours` (`number`)

## Returns

[DevTunnelResource](/reference/api/typescript/aspire.hosting.devtunnels/devtunnelresource.md) `builder`

## Applies to

- [DevTunnelResource](/reference/api/typescript/aspire.hosting.devtunnels/devtunnelresource.md)