During May 2025, Brett Heffelfinger refined the semanticarts/gist ontology by updating the class hierarchy so that gist:Text is now a subclass of gist:ContentExpression rather than gist:Content. This change, implemented using OWL and RDF in the Turtle syntax, improved the semantic accuracy and maintainability of the ontology. Brett documented the update in the release notes, provided migration guidance, and ensured traceability by linking the change to the relevant issue. The work focused on correctness and clarity, with no major bugs reported during the period. The depth of the contribution reflects careful attention to ontology engineering best practices.