Worked on maintaining the integrity of Homebrew’s cask ecosystem by updating the SHA256 checksum for the QGIS cask in the homebrew-cask repository. Focused on package management and cask management using Ruby, the update addressed a security-sensitive issue to ensure the authenticity of QGIS version 4.0.1 downloads. The approach involved verifying integrity checks to prevent tampering and support reproducible deployments, aligning with best practices for software distribution and supply-chain security. By delivering this targeted bug fix, contributed to the reliability of Homebrew’s package management infrastructure, emphasizing careful attention to security and the reproducibility of open-source software deployments.