Renhong Cai upgraded the go-redis dependency from version 8 to 9 in the goharbor/harbor repository, focusing on enhancing supply chain security and maintaining compatibility with evolving features. This work involved careful backend development in Go, with attention to dependency management to ensure a smooth transition and minimize disruption to existing functionality. By addressing the underlying library, Renhong improved the project’s security posture and prepared the codebase for future feature development. Although no major bugs were fixed during this period, the depth of the upgrade reflects a methodical approach to maintaining robust, secure backend systems using Go and modern dependency practices.