Elt Sans expanded the Arduino library catalog within the arduino/library-registry repository by adding new repository URLs, including ServoM, to the repositories.txt file. This work, completed through two targeted commits, focused on repository management and improved the discoverability of libraries for Arduino developers. By updating the catalog, Elt increased the breadth of available libraries, supporting a more robust ecosystem and streamlining the process for developers to find and integrate new resources. The technical approach centered on precise text file manipulation and careful version control, demonstrating a methodical contribution to maintainability and efficiency, though the scope was limited to catalog expansion.