Worked on maintaining and improving the mozilla/neqo repository by upgrading its nss-rs dependency from version 0.8.0 to 0.9.0, focusing on leveraging recent bug fixes, performance improvements, and enhanced TLS features. Used Rust and dependency management skills to ensure seamless integration, validating the update through continuous integration pipelines and confirming that no API changes or regressions occurred. Documented the change thoroughly for future audits and maintenance, establishing a stable foundation for upcoming TLS enhancements. The work emphasized repository-wide compatibility and stability, reflecting a methodical approach to dependency upgrades and ecosystem alignment within a Rust-based codebase.