During February 2025, Saghen contributed to the Saghen/nixpkgs repository by upgrading the Zydis and Zycore dependencies to versions 4.1.1 and 1.5.2, respectively. This work involved updating version strings and SHA256 hashes within the Nix package definitions, ensuring that builds consistently use the latest libraries. By focusing on build systems and package management, Saghen improved reproducibility and compatibility across different environments. The changes addressed the risk of outdated components and supported downstream users with more secure, stable tooling. The engineering effort demonstrated a methodical approach to dependency management using Nix, emphasizing reliability and maintainability in the build process.