During January 2025, Ben Eyselein developed a new feature for the com-lihaoyi/mill repository, enabling ScalaPB to generate Scala 3 syntax through a dedicated scala3_sources option. He integrated this capability into the ScalaPB plugin by updating ScalaPBModule.scala, wiring compiler arguments, and ensuring robust test coverage. His work included updating documentation to guide users and facilitate adoption. By leveraging skills in Scala, build tooling, and plugin development, Ben addressed the challenge of simplifying Protocol Buffers usage for Scala 3 in Mill, reducing migration friction and supporting safer cross-version builds. The feature was delivered with a focus on maintainability and clarity.