# Calls without the API-Version header are redirected to a newer version

From January 15, 2027, monday.com API answers calls to /v2*, no api-version header from a newer version.

On January 15, 2027, default routing for /v2* calls without an api-version header will change. monday.com API will answer these requests from a newer version instead of the previous default. After that day, calls missing the header are redirected to version 2027-01 as the new Current release.

## What to use instead

Send API-Version with the version the calls are built for. On January 15, 2027, calls without this header will automatically receive 2027-01, the new Current version.

- API: monday.com API (api.monday.com)
- Kind: Version retirement
- Takes effect: January 15, 2027
- Calls after that day: answered by a newer version
- Calls it hits: `/v2*`, `no api-version header`
- Source: [Lifecycle page](https://developer.monday.com/api-reference/docs/api-versioning)
- Verified: November 6, 2026, against monday.com API's own pages
- Page: https://www.okapi.bot/providers/monday-com-api/breaking-changes/calls-without-the-api-version-header-are-redirected-to-a-newer-version/

## monday.com API's words

> Current: Used as the default version when no header is passed. Version name: 2027-01; Current (default): January 15th, 2027

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent