During June 2025, Cy focused on maintaining the accuracy and clarity of educational materials in the QuantEcon/lecture-python.myst repository. Addressing a specific issue in the McCall model lecture notes, Cy identified and corrected a state-space notation error by replacing an incorrect variable, ensuring the documentation accurately reflected the intended mathematical model. This targeted bug fix, implemented using Markdown and documentation best practices, improved the consistency of the lecture content and reduced potential confusion for students. Although the work did not involve new feature development, Cy’s attention to detail contributed to the overall quality and reliability of the repository’s instructional resources.