Worked on the aio-libs/aiohttp repository to enhance CI/CD workflow compatibility with Python 3.14, focusing on maintaining stability during the transition to the new Python version. Addressed a critical bug by updating the workflow configuration, using Python and YAML to ensure that automated tests and builds would not regress. Regenerated pickled cookie data to preserve runtime behavior, preventing subtle issues that could arise from serialization changes in Python 3.14. Applied skills in CI/CD, Python development, and testing to deliver a robust solution that maintained project reliability, demonstrating careful attention to compatibility and the integrity of automated deployment processes.