During July 2025, Marc Brousseau focused on maintaining the AvaloniaUI/AvaloniaEdit repository by upgrading the TextMateSharp and TextMateSharp.Grammars dependencies to version 1.0.70. He approached this task through careful dependency management, making targeted changes exclusively within the XML-based project file. This update aimed to deliver upstream bug fixes and potential performance improvements, enhancing syntax highlighting compatibility for Avalonia-based text editors. The work required no direct code modifications, reflecting a low-risk, maintainable approach to library upgrades. Marc’s contribution demonstrated a methodical application of dependency management skills, ensuring ongoing stability and compatibility for the project’s text editing components.