Marc Fett focused on stabilizing dependency update automation for the ls1intum/tum-apply repository by addressing a misconfiguration in the Renovate tool. Through careful configuration management and DevOps practices, Marc resolved issues that previously caused inconsistent automatic updates, thereby reducing both security vulnerabilities and maintenance overhead. He utilized JSON to adjust the Renovate configuration, ensuring updates now occur reliably without manual intervention. The work included documenting changes through precise Git commits, reflecting strong attention to version control and collaboration. While the scope was limited to a single bug fix, the solution demonstrated depth in automation reliability and security-focused engineering.