During May 2025, Antoine contributed to the ruby/ruby ecosystem by enhancing changelog rendering in the RubyGems repository. He updated the setup command to generate changelogs with double hash headings, aligning output with documentation standards and improving the reliability of release notes. This required adjusting the version-matching regular expressions and updating associated tests to ensure correct heading levels and prevent regressions. Working primarily in Ruby and leveraging skills in regular expressions and scripting, Antoine’s changes improved the maintainability of changelog formatting. The work demonstrated a focused, well-scoped approach to feature delivery, with careful attention to integration and test coverage.