In October 2024, Hohayo delivered localization support for the ActiveAdmin Version 4 UI in the activeadmin/activeadmin repository. They updated Japanese and Traditional Chinese YAML locale files, introducing new translation keys for features such as the dark mode toggle, main navigation, sections, and user menus. This work focused on internationalization, ensuring that the new UI elements in Version 4 were accessible and consistent for users in multiple languages. While the contribution was limited to a single feature and did not involve bug fixes, it demonstrated careful attention to detail in synchronizing translations with evolving interface requirements using YAML.