Worked on the XcodesOrg/homebrew-cask repository to enhance the security and reliability of the engine download process. Addressed a targeted bug by updating the checksum for engine-dj version 5.0.0, ensuring that downloaded files maintain integrity and authenticity. This fix reduced the risk of corrupted or tampered installations by strengthening the verification process within the Homebrew Cask pipeline. The solution was implemented with a precise Ruby commit, focusing on package management best practices and aligning with broader security hardening efforts. The work emphasized minimal risk and clear traceability, supporting future audits and maintaining high standards for release integrity checks.