As an important part of a society that should be welcoming to all, libraries have been seeking ways to ensure their catalogs reflect principles of diversity, equity, and inclusion. In this presentation, I will share what we are doing at LCI to improve our cataloging metadata and achieve two DEI goals: (1) Replace outdated, inappropriate, offensive, or insensitive subject headings while ensuring that resources in our catalog remain searchable and discoverable; (2) Add current, appropriate, and inclusive subject headings if missing, allowing resources on these subjects to be more discoverable.