Marcel Weisgut focused on improving memory management stability in the hyrise/hyrise repository by addressing a deallocation issue within a dependency. He migrated the project’s memory management from Boost PMR to the standard library’s std::pmr, ensuring compatibility with modern C++ toolchains and simplifying future maintenance. This transition preserved existing functionality while reducing memory-related risks and aligning the codebase with current standards. Marcel’s work required expertise in C++, build systems, and dependency management, and involved updating compiler requirements to support the new approach. The depth of this contribution lies in its careful modernization and its impact on long-term project stability and maintainability.