# What changed in @react-email/ui

> 2 changes in @react-email/ui 6 from its official release notes, upgrade guides and advisories. Each one cited. Sources checked 2026-10-19. HTML: https://unstale.sh/npm/@react-email/ui/

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

## @react-email/ui 6

### Fixes and other changes

- The prebuilt preview server works in projects on Next.js 16.4, avoiding an ENOENT error when Next.js is deduped to 16.4. (6.11.3) — [release notes](https://github.com/resend/react-email/releases/tag/%40react-email/ui%406.11.3)
- The compatibility check now applies this option when bundling templates that pass config, theme, or utility to <Tailwind>, preventing build errors when their imports need a plugin. (6.11.3) — [release notes](https://github.com/resend/react-email/releases/tag/%40react-email/ui%406.11.3)