During February 2026, Hlib Kozyryatskyy updated the Hiero Network’s upgrade documentation in the hiero-ledger/hiero-improvement-proposals repository, focusing on the Ethereum Pectra upgrade. He authored HIP-1341, providing detailed guidance on which Ethereum Improvement Proposals (EIPs) were applicable or not to Hiero, thereby clarifying the upgrade path for developers. His work involved technical documentation using Markdown, application of blockchain governance processes, and smart contract domain knowledge. By delivering a signed-off commit, Hlib ensured traceability and reviewability. The documentation improved upgrade readiness and reduced integration risk, demonstrating a thorough understanding of cross-chain upgrade requirements and effective use of Git version control.