Worked on the bazelbuild/bazel-central-registry repository to deliver Bazel 9 compatibility for the gcem module by introducing a new module version managed through overlay files. This approach replaced the previous patch-based update method, streamlining dependency management and simplifying future upgrades. By adopting overlays, the work improved maintainability and reduced reliance on unstable archives, minimizing risk for users. The contribution aligned with project conventions and incorporated reviewer feedback, ensuring smooth integration. Utilizing Bazel and version control skills, the developer focused on reducing upgrade friction for Bazel 9 users and establishing a foundation for future dependency alignment within the registry.