Jhan Srbinovsky enhanced the ACCESS-NRI/ACCESS-ESM1.6 repository by focusing on dependency management and configuration stability. He updated the spack.yaml configuration to lock in the latest development versions of access-esm1p6 and um7, ensuring the project could benefit from upstream bug fixes and new features. Using YAML for configuration management, Jhan implemented reproducible builds and reduced environment drift, which supports more reliable CI validation and production stability. His work involved careful alignment with upstream references and minimal disruption to the codebase, demonstrating a methodical approach to dependency hygiene and build reproducibility within a complex scientific software environment.