# prerelease_upgrade_supported

> **Function** in `deepagents_code`

📖 [View in docs](https://reference.langchain.com/python/deepagents-code/update_check/prerelease_upgrade_supported)

Return whether pre-release upgrades are supported for the install method.

Pre-release channel switching is only safe for `uv tool` installs, where
`uv tool upgrade --prerelease allow` re-resolves against the pre-release
feed. Other package managers can't be steered onto that channel, so callers
should refuse before promising an upgrade.

## Signature

```python
prerelease_upgrade_supported(
    method: InstallMethod | None = None,
) -> tuple[bool, str | None]
```

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `method` | `InstallMethod \| None` | No | Install method override.  Auto-detected if `None`. (default: `None`) |

## Returns

`bool`

A `(supported, reason)` tuple. `reason` is `None` when supported, else a

---

[View source on GitHub](https://github.com/langchain-ai/deepagents/blob/e14e0adcbe78565ed3650e7f24b2a775d5437d25/libs/code/deepagents_code/update_check.py#L1344)