During June 2025, Kehn focused on stabilizing external test packaging for the facebook/buck2-prelude repository. He addressed a persistent issue in the build system by reverting an unwanted warning that had introduced noise into continuous integration, and corrected the package builder to properly handle external test packages when using the 'go list' command. By ensuring both regular and external test files were included in builds, Kehn reduced build failures and improved test reliability. His work leveraged skills in Go development and build system management, demonstrating a methodical approach to improving CI reliability and the consistency of test packaging within the project.