Worked on the pytest-dev/pytest repository to enhance dependency compatibility testing and improve packaging hygiene. Focused on Python dependency management, the work involved adding explicit minimum version constraints for key dependencies such as colorama, iniconfig, and packaging within the pyproject.toml configuration. Updated exceptiongroup to a stable release, enabling comprehensive testing against older dependency versions and supporting various resolution strategies. These changes expanded the compatibility testing matrix and improved CI feedback, ensuring pytest’s behavior remains reliable across a broader range of environments. The engineering approach emphasized robust Python packaging practices and careful dependency management to support long-term project maintainability.