Worked on maintenance-driven improvements across the Tweag/cardano-ledger and IntersectMBO/cardano-base repositories, focusing on release packaging and dependency management. Updated the release configuration in cardano-ledger by refining the set of test suites included in the release manifest, ensuring only relevant components were packaged. In cardano-base, upgraded the contra-tracer dependency to maintain compatibility with existing tooling, introducing no functional changes. Coordinated these changes to support release hygiene and reduce risk in future release cycles. Utilized Haskell and Markdown to implement and document these updates, applying skills in dependency management and release engineering to streamline the software delivery process across both projects.