Worked on the balena-io/balena-cli repository to deliver a security-focused dependency upgrade, specifically targeting the Express framework. Addressed security vulnerabilities by updating the shrinkwrapped Express dependency to version 4.21.1, ensuring that the latest patches and improvements were incorporated without disrupting existing workflows. Reflected these changes in the package-lock.json file to guarantee reproducible builds and consistent environments across deployments. Utilized skills in dependency management and JSON to maintain compatibility and stability throughout the process. This work enhanced the CLI’s security posture and maintainability, supporting safer deployments and reinforcing customer trust in the reliability of the toolchain.