In June 2025, John Hunkeler focused on improving the stability of code coverage analysis for the spacetelescope/jwst repository. He addressed a persistent issue where certain configuration files, specifically config.py and config-3.py, triggered cv2-related errors during coverage runs, leading to unreliable CI reports. By refining the coverage configuration to exclude these files, John reduced false positives and improved the accuracy of test metrics. His work demonstrated practical expertise in Python and TOML, as well as a strong understanding of code coverage and configuration management. The targeted fix resulted in cleaner CI feedback and lowered ongoing maintenance demands for the project.