# [2023-02-01] Nylas Python SDK v5.13.1

Source: https://developer.nylas.com/docs/new/v2-changelogs/2023-02-01-python-sdk-v5-13-1/

The Nylas Python SDK v5.13.1 has been released!

- GitHub: [Nylas Python SDK](https://github.com/nylas/nylas-python/releases/tag/v5.13.1)
- Distribution: [PyPi](https://pypi.org/project/nylas/5.13.1.post1)

## Updated

- Fixed `send_authorization` to return the correct dict ([#254](https://github.com/nylas/nylas-python/pull/254))
- Fixed expanded threads to properly inflate the messages objects ([#254](https://github.com/nylas/nylas-python/pull/254))
- Fixed class attributes with leading underscores to be serialized as expected ([#254](https://github.com/nylas/nylas-python/pull/254))