Matt Johnston contributed to the supabase/supabase repository by updating the humans.txt file to acknowledge a core contributor, enhancing transparency and community engagement. He focused on documentation, working primarily with plaintext to ensure accurate and visible attribution within the project. This update aligned with open-source best practices by reinforcing contributor recognition and clarifying project ownership. While the scope of work was limited to a single feature and did not involve bug fixes or complex code changes, Matt’s contribution supported the project’s attribution policy and helped foster a stronger sense of trust and collaboration within the supabase open-source community during the month.