Worked on the UCD-SERG/serocalculator repository, focusing on targeted maintenance and stability improvements. Addressed a snapshot testing issue by updating test outputs to accurately reflect changes in the estimate_scr.md function, ensuring that the correct data frame was referenced for reproducible results. Performed a routine package version bump to maintain clear versioning and support downstream reliability. The work emphasized careful package management and robust testing practices using R, with attention to reproducibility and release readiness. By prioritizing reliability and clear documentation, contributed to a more stable codebase and streamlined the release process for ongoing development and user confidence.