Oskar Williams focused on enhancing the security and reliability of the balena-io/balena-cli repository by delivering a targeted dependency management update. He upgraded the shrinkwrapped Express dependency to version 4.21.1, applying essential security patches and improvements while ensuring compatibility with existing workflows. This work involved careful modification of JSON-based package management files, particularly package-lock.json, to guarantee reproducible builds and consistent environments. By prioritizing security and maintainability, Oskar enabled safer deployments and increased customer trust. His approach demonstrated a solid understanding of dependency management and build reproducibility, addressing business needs through precise, well-scoped engineering within a short timeframe.