Markus Wanner enhanced the upgrade documentation for the EnterpriseDB/docs repository, focusing on the PGD component. He updated Markdown-based guides to reflect current PGD versioning and clarified rolling upgrade procedures, aiming to make upgrade paths more accurate and user-friendly. His work emphasized clear, maintainable documentation, reducing ambiguity and supporting smoother customer upgrades. Markus applied his expertise in documentation and Markdown to ensure that examples and instructions aligned with the latest software releases. While no bugs were fixed during this period, his targeted improvements contributed to ongoing documentation health, providing a reliable resource for users and reducing the need for support intervention.