Worked on the lizongying/homebrew-cask repository to enhance package management workflows by updating the SHA-256 checksums for the Marvin application version 1.66.2 across both ARM and Intel architectures. This update ensured the authenticity and integrity of downloads, reducing the risk of supply-chain vulnerabilities and preventing checksum mismatches during installation. Leveraging skills in package management and software distribution, the developer focused on maintaining repository integrity through targeted metadata updates. The work, implemented in Ruby, improved end-to-end verification within the Homebrew Cask installer workflow, resulting in more reliable automated validation and a smoother experience for users installing the Marvin package.