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

# Versioning

> Learn about API change management and how to set the appropriate version in your connection.

export const latestAdminApiVersion = <code>2026-06-01</code>;

The Admin API is versioned. Our API versions are named for the date the version is released. For example, our latest version is {latestAdminApiVersion}.

Set the version by including a `Notion-Version` header. Setting this header is **required**.

```bash cURL theme={null}
curl https://api.notion.com/admin/v1/legal_holds \
-H "Authorization: Bearer adm_t1CdN9S8yicG5eWLUOfhcWaOscVnFXnsJM9cWeCdTNfhbt"
-H "Notion-Version: 2026-06-01"
```

<Warning>
  **Required Header**

  The `Notion-Version` header must be included in all REST API requests. This ensures the Notion API response is consistent with what your code expects.

  The most recent `Notion-Version` is {latestAdminApiVersion}.
</Warning>