material-ui changelog & breaking changes

v9.1.0

2026-06-08

⚠ Potential breaking changes

2026-05-07

⚠ Potential breaking changes

[button][fab][menu item][list item button] Remove duplicated className entries (#48213) @silviuaavram
[focus trap] Remove IE 11-specific focus safety check from FocusTrap cleanup (#48368) @ZeeshanTamboli
[icon button] Remove unused color palette mapping in styles (#48353) @sai6855
[utils] Remove unnecessary `excludeKeys` from `extractEventHandlers` (#48481) @ZeeshanTamboli
[docs] Remove esm.sh references and endorsement (#44649) (#48330) @starboyvarun
[docs] Remove generated CSS utility component doc (#48383) @mj12albert
[docs] Remove incorrect message from experiments page and hide `/experiments` from crawlers (#48297) @ZeeshanTamboli
[docs] Remove outdated references of .ttf and .woff (#48399) @oliviertassinari
[code-infra] Migrate to vite from webpack for e2e tests (#48248) @brijeshb42
[code-infra] Remove a few ts-ignore comments (#43265) @Janpot

2026-05-07

⚠ Potential breaking changes

2026-04-08

⚠ Potential breaking changes

[codemod] Add v7 migration docs for deprecated Autocomplete APIs and Autocomplete codemod (#47954) @ZeeshanTamboli

2026-04-08

⚠ Potential breaking changes

Check out the [upgrade guide](https://mui.com/material-ui/migration/upgrade-to-v9/) to see how you can move to this version.
Remove unnecessary overridesResolvers from styled components (#48204) @sai6855

2026-04-02

⚠ Potential breaking changes

Breaking Changes
[grid] Remove 'column' and 'column-reverse' options from `direction` prop (#47564) @sai6855
[icons] Remove legacy `*Outline` icons (#48116) @mj12albert
Update "Deprecated APIs removed" section to h2 in "Upgrade to v9" docs (#48115) @ZeeshanTamboli
[test] Remove `componentsProp` from `describeConformance` tests (#48142) @ZeeshanTamboli