During December 2025, this developer focused on enhancing the stylelint/stylelint repository by upgrading its core linting dependency to version 17.0.0. The work involved careful updates to both package.json and package-lock.json, ensuring the project adopted the latest linting rules and fixes without disrupting existing workflows. Emphasizing package management and version control, the developer maintained code quality and packaging integrity throughout the process. Working primarily with JSON and leveraging modern dependency management practices, the upgrade streamlined future maintenance and aligned the repository with current standards. No bug fixes were recorded, as the month’s efforts centered exclusively on this tooling improvement.