# [2021-06-10] Nylas Ruby SDK v5.1.10

Source: https://developer.nylas.com/docs/new/v2-changelogs/2021-06-10-ruby-sdk-v5-1-10/

## New

- We added support for read-only attributes.
- We added `save_all_attributes` and `update_all_attributes` methods to support nullifying attributes.
- We added Event metadata.

## Bug Fixes

- We fixed attribute assignments for deltas.
- We fixed an issue where files couldn't be attached to drafts.
- We fixed an exception raise when Content-Type is not JSON.
- We fixed an issue where the draft version wouldn't update after `update` or `save`.