During September 2025, Weiwei Lau focused on improving dependency management for the facebook/dotslash repository by standardizing its compression library. Weiwei replaced the xz2 dependency with liblzma, aligning the project with broader Rust ecosystem standards and enhancing compatibility with other crates. This change streamlined library integration and improved maintainability, ensuring smoother upgrade paths for downstream users. The work demonstrated proficiency in Rust and Cargo, with a clear emphasis on ecosystem alignment and long-term project health. While no bugs were addressed during this period, the targeted feature delivered tangible benefits in interoperability and set a foundation for future development efficiency.