> For the complete documentation index, see [llms.txt](https://support.safeheron.com/help-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.safeheron.com/help-center/product-and-solution/maintenance-log/ethereum-fusaka-upgrade-hard-fork-notice.md). # Ethereum Fusaka Upgrade (Hard Fork) Notice The Ethereum network will undergo the Fusaka hard fork upgrade. Start Time: 05:49:11, December 4, 2025 (GMT+8) End Time: 07:49:11, December 4, 2025 (GMT+8) Safeheron will seamlessly support the hard fork. During the upgrade period, your team's asset security, block scanning, deposit processing, and related interfaces will remain unaffected. If you encounter any unusual chain transaction status or system behavior during this period, please contact us immediately. We sincerely appreciate your understanding and cooperation. Safeheron Team December 1