# What changed in serverless

> 6 changes in serverless 4 from its official release notes, upgrade guides and advisories: 4 new APIs and options. Each one cited. Sources checked 2026-10-19. HTML: https://unstale.sh/npm/serverless/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## serverless 4

### New APIs and options

- Adds a command for logging in to AWS. (4.29.0) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.29.0)
- Added Serverless Framework support for AWS Lambda durable functions. (4.28.0) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.28.0)
- Added Serverless Framework support for AWS Lambda Managed Instances. (4.28.0) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.28.0)
- Added an option to pass the tenant ID when invoking with sls invoke. (4.27.1) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.27.1)

### Fixes and other changes

- Avoids adding unnecessary duplicate managed policies for durable functions. (4.29.0) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.29.0)
- Fixed a regression affecting integration request parameters in AWS REST API. (4.27.1) — [release notes](https://github.com/serverless/serverless/releases/tag/v4.27.1)