Worked on the netflix/metaflow repository to enhance artifact serialization by introducing support for pickle protocol 4, focusing on improving storage efficiency and data handling within the Metaflow framework. Leveraged Python programming and data serialization techniques to reduce artifact footprint and increase data portability across flows. The implementation involved validating compatibility and performance of the new protocol, ensuring seamless integration with existing workflows. Additional efforts included refining documentation and maintainability of the serialization path to facilitate future enhancements. No major bugs were addressed during this period, but ongoing stability improvements and code quality work accompanied the feature development throughout the month.