Worked on enhancing the ubicloud/runner-images repository by upgrading the Maven toolchain in Ubuntu environments from version 3.9.12 to 3.9.13. This update focused on configuration management and DevOps practices, ensuring that Java build environments benefit from the latest security fixes and improved compatibility. The approach involved updating JSON-based configuration files to reflect the new Maven version, thereby reducing risks associated with outdated dependencies and improving CI stability. By maintaining a clear commit history for this change, the work enhanced traceability and aligned the build process with current ecosystem standards, though no major bugs were addressed during this period.