During June 2025, Yusa focused on enhancing the Shopify/grpc library to ensure compatibility with PHP 8.4. He addressed a typing bug by updating ServerCallWriter and Status classes to support nullable parameter types, aligning the codebase with the latest PHP standards. Yusa also raised the minimum supported PHP version from 7.0 to 7.1, updating documentation and configuration files to reflect these changes. His work in PHP development and library maintenance improved runtime reliability and reduced upgrade friction for users. The depth of his contribution lay in careful code refactoring and thorough documentation, supporting smoother adoption of future PHP versions.