Geoff focused on build system management for the OpenXiangShan/buildroot repository, delivering a targeted upgrade of the Flannel dependency to version 0.26.0. He managed the update by revising the Makefile and flannel.hash, ensuring the new SHA256 checksum and version pinning were in place for reproducible builds. This work reduced the risk of version drift and improved security while maintaining compatibility for downstream users. Geoff’s approach emphasized stability and traceability in the build pipeline, leveraging Makefile expertise and dependency management best practices. Over the month, he contributed one feature, demonstrating depth in maintaining robust and reliable build infrastructure.