During the month, work focused on enhancing the MontiCore/monticore repository’s CI/CD process by addressing a security and maintenance concern within the GitLab CI workflow. The developer removed automatic GitHub mirroring steps from the .gitlab-ci.yml configuration, ensuring that the repository remains the single source of truth during continuous integration. This adjustment, implemented using YAML and leveraging GitLab CI expertise, reduced the risk of cross-repository misalignment and exposure. By disabling mirroring, the workflow now offers improved security, compliance, and reliability across environments. The update addressed a key bug, streamlining maintenance and reinforcing consistent pipeline behavior without introducing new features.