During December 2024, Xiaolong Gao focused on security hardening and maintenance for the gin-gonic/gin repository. He addressed dependency-related vulnerabilities by updating core Go modules, including golang.org/x/net, golang.org/x/crypto, golang.org/x/sys, and golang.org/x/text, through a vendor-level patch. This work reduced exposure to known CVEs and improved supply chain security for downstream users, all while maintaining API compatibility. Xiaolong applied his expertise in Go and back end development to ensure the updates integrated smoothly with existing code. The depth of his contribution lay in balancing robust security improvements with the stability and reliability required by production systems.