In May 2025, Andrey Laptev upgraded the embedded PostgreSQL test environment to version 15.x in the hhru/nuts-and-bolts repository, updating the default image and revising the changelog to reflect the transition from 13.x. He enhanced the testing documentation by adding guidance for verifying driver compatibility, supporting smoother integration for future updates. Andrey applied his skills in configuration management, Java, and testing, working primarily with Java and YAML to ensure the upgrade process was robust and well-documented. While the scope was focused on a single feature, the work demonstrated careful attention to compatibility and maintainability within the project’s testing infrastructure.