Worked on security hardening for the apache/celeborn repository by upgrading the Ratis library from version 3.1.2 to 3.1.3, directly addressing vulnerabilities CVE-2024-7254 and Sonatype-2020-0026. Focused on dependency management using Scala, the work emphasized stability, compliance, and traceability without introducing user-facing changes. The process included thorough build sanity checks and regression testing to ensure compatibility and maintain system reliability. By documenting the upgrade through a dedicated commit, the developer improved the project’s dependency hygiene and mitigated security risks. This contribution reflects a methodical approach to maintaining secure, stable infrastructure through targeted bug fixes and careful dependency updates.