In October 2025, Mat focused on build system configuration and dependency management for the ruby/ruby repository, delivering a targeted update to the Rust extension gem template. By upgrading the magnus dependency to version 0.8.2 within the Cargo.toml.tt template, Mat ensured that all newly generated Rust extension gems would leverage the latest library improvements. This template-driven approach centralized future dependency updates, streamlining maintenance and reducing upgrade overhead for downstream projects. Working primarily with Ruby and Rust, Mat’s contribution was implemented as a single, traceable commit, reflecting a precise and maintainable engineering solution that addressed compatibility and stability for future gem development.