Brun focused on packaging and release engineering for the coq/opam repository, delivering updated opam definitions and release artifacts for the MathComp v2.4.0 core libraries and v2.2.0 finmap. Working primarily with OCaml and leveraging expertise in package management and mathematical libraries, Brun implemented explicit dependency management, build instructions, and tarball source distributions to improve reproducibility and streamline downstream integration. The work emphasized maintainability and traceability, with all changes committed for clear version history. Although no bugs were fixed during this period, the depth of the release process ensured smoother deployments and more reliable builds for the Coq ecosystem.