CHANGELOG.md in govuk_tech_docs-3.0.0 vs CHANGELOG.md in govuk_tech_docs-3.0.1

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 # Changelog
 
 ## Unreleased
 
+## 3.0.1
+
+### Fixes
+
+We’ve made the following fixes to the tech docs gem in [pull request #281: Don't break TOC when OpenAPI description includes headers](https://github.com/alphagov/tech-docs-gem/pull/281): 
+
+* we now render OpenAPI Markdown with the same Markdown renderer as other documents
+* table of contents (TOC) uses `TechDocsHTMLRenderer` to render the headings with IDs
+
+Thanks to [@jamietanna](https://github.com/jamietanna) for contributing to this issue and its solution.
+
 ## 3.0.0
 
 ### Breaking changes
 
 The search user experience is now more accessible for screenreader users. Search results are now on a separate page instead of a modal window.