During July 2025, contributed to the grafana/k6-DefinitelyTyped repository by updating TypeScript definitions for the Telegram Web App to support Bot API 9.0. This work involved expanding typings to include new properties and event handlers for device sensors, safe area insets, and enhanced app state management, ensuring alignment with upstream Bot API changes. The approach focused on precise API integration and thorough documentation to facilitate downstream adoption. Leveraging TypeScript and web development expertise, the update improved the accuracy and maintainability of type definitions, supporting developers in integrating the latest Telegram features into their applications with greater confidence and reliability.