Wouter Vellema enhanced the dagger/dagger repository by implementing support for non-default SSH ports in module references, addressing deployment challenges in restricted environments. He updated the ParseGitRefString function in Go to accurately parse and include custom port information, ensuring compatibility with a wider range of deployment scenarios. To reinforce the robustness of this feature, Wouter expanded unit test coverage, validating the new port-aware parsing logic and improving overall reliability. His work focused on backend development using Go, with careful attention to parsing accuracy and test-driven validation. This contribution increased deployment flexibility and reduced friction for users requiring custom SSH port configurations.