Worked on enhancing the security and reliability of the Flowdown cask within the Homebrew/homebrew-cask repository by delivering a targeted integrity update. Focused on updating the SHA256 checksum using Ruby to ensure that distributed package files remain untampered and compliant with security standards. Collaborated closely with repository maintainers to integrate the change smoothly, maintaining clear traceability for future audits. This update reinforced cask management practices and supported secure package distribution, directly addressing supply-chain risks. The work emphasized careful attention to build integrity and user trust, leveraging expertise in Ruby and package management to deliver a focused, compliance-driven improvement to the deployment process.