# What changed in @tiptap/extension-code-block-lowlight

> 4 changes in @tiptap/extension-code-block-lowlight 1 to 3 from its official release notes, upgrade guides and advisories: 2 breaking. Each one cited. Sources checked 2026-10-27. HTML: https://unstale.sh/npm/@tiptap/extension-code-block-lowlight/

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

## @tiptap/extension-code-block-lowlight 3

### Fixes and other changes

- Fixes peer dependency resolution conflicts when installing dependencies after package updates. (3.22.4) — [release notes](https://github.com/ueberdosis/tiptap/blob/db790a7c5a6009b0a94382e12e1a5e9c642e1660/packages/extension-code-block-lowlight/CHANGELOG.md#3224)
- Fixed a runtime error when initializing CodeBlockLowlight caused by ESM/CJS interop issues. (3.20.0) — [release notes](https://github.com/ueberdosis/tiptap/blob/db790a7c5a6009b0a94382e12e1a5e9c642e1660/packages/extension-code-block-lowlight/CHANGELOG.md#3200)

## @tiptap/extension-code-block-lowlight 1

### Breaking changes

- The code block extension’s JSON type is now codeBlock instead of code_block; stored JSON content needs to be renamed during migration. (1.0.0) — [upgrade guide](https://tiptap.dev/docs/guides/upgrade-tiptap-v1)
- Use toggleCodeBlock instead of the old code_block command to toggle a code block. (1.0.0) — [upgrade guide](https://tiptap.dev/docs/guides/upgrade-tiptap-v1)