# What changed in sphinx-tabs

> 12 changes in sphinx-tabs 2 to 3 from its official release notes, upgrade guides and advisories: 5 breaking. Each one cited. Sources checked 2026-10-29. HTML: https://unstale.sh/pypi/sphinx-tabs/

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

## sphinx-tabs 3

### Breaking changes

- Support for Python versions below 3.10 was dropped. (3.5.0) — [release notes](https://github.com/executablebooks/sphinx-tabs/releases/tag/v3.5.0)
- Support for Sphinx versions below 7 was dropped. (3.5.0) — [release notes](https://github.com/executablebooks/sphinx-tabs/releases/tag/v3.5.0)

## sphinx-tabs 2

### Breaking changes

- Selecting an open tab now closes the tabs panel. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- Semantic UI assets were removed, reducing the JavaScript and CSS payload. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- The unused Sphinx option was removed. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)

### Behavior and default changes

- ARIA labels were added for tabs and panels. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- Sphinx now copies JS/CSS assets during building instead of the extension. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- The last selected group tab persists between pages when the browser supports session storage. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- A margin was added below images inside tab content. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- Tab label colour changed to increase contrast with the background. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- Tab HTML now uses tab roles. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)
- Tabindex attributes allow users to focus and switch tabs using a keyboard. (2.0.0) — [upgrade guide](https://github.com/executablebooks/sphinx-tabs/blob/master/CHANGELOG.md)