Blog/January 15, 2026

Yumma CSS 3.8

Yumma CSS is now a monorepo! We've put the API, Nitro and Runtime into the main repository, this should make development much more coordinated.

Yumma CSS 3.8

This should be a very easy update to install. Check out the release notes for more information.


The Monorepo Transition

We've officially transitioned the Yumma CSS ecosystem into a monorepo! This means that api, nitro (the engine behind Yumma CSS), and runtime are now all living under the main yummacss repository.

I've wanted to do this for a long time. Bringing everything under one roof makes the development process much more efficient and ensures everything stays in sync.

Public Archives

Following this change, the repositories dedicated to the API, Nitro, and Runtime have been archived. You can still view them, but all future development will take place within the main monorepo.

Version Synchronization

We've synchronized the versions of all core packages to match the main Yumma CSS version as part of this transition.

  • @yummacss/api@1.8.0 -> @yummacss/api@3.8.0
  • @yummacss/nitro@0.5.0 -> @yummacss/nitro@3.8.0
  • @yummacss/runtime@0.3.0 -> @yummacss/runtime@3.8.0

No API Changes

This update is purely an internal structural change. There are no new functionalities, bug fixes, or changes to how you use Yumma CSS or its subpackages. Everything works exactly as it did before!


Upgrade

You can get the latest version of Yumma CSS from npm:

Terminal window
npm install yummacss@latest