During August 2025, Bismarrck focused on improving the robustness of the Newton-Raphson root-finding algorithm in the lanl/singularity-eos repository. He addressed a subtle bug in the convergence check by introducing an absolute-value based comparison for negative ytarget values, which reduced the risk of false convergence and enhanced solver reliability in edge-case scenarios. Working primarily in C++ and leveraging his expertise in algorithm optimization and numerical methods, Bismarrck ensured the fix was well-documented and traceable through version control. This targeted improvement contributed to more accurate and stable production simulations, reflecting a thoughtful and methodical approach to numerical software engineering.