In May 2025, Andrey Laptev upgraded the embedded PostgreSQL test environment to version 15.x in the hhru/nuts-and-bolts repository, addressing compatibility and maintainability for Java-based integration tests. He updated the default Docker image and revised the changelog to document the transition from PostgreSQL 13.x to 15.x, ensuring transparency for future development. Andrey also enhanced the testing documentation by adding guidance on verifying driver compatibility, supporting smoother upgrades and reducing integration risks. His work demonstrated a focused application of configuration management, Java, and YAML, delivering a targeted feature with clear documentation, though the scope was limited to a single upgrade task.