During April 2026, Mayday Chai contributed to the nim-lang/Nim repository by delivering a documentation-focused patch that corrected the Mac OS X minimum version in the README from 10.04 to 10.4. This update, implemented using Markdown, ensured that platform support information was accurate for both maintainers and users. Mayday verified the change locally, confirming that no code or tests were affected, which preserved the existing project behavior. By focusing on documentation skills and attention to detail, Mayday addressed a potential source of confusion for macOS users, ultimately improving onboarding clarity and reducing the risk of build or support issues.