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Maintenance

Upcoming Arbitrum Mainnet Node Upgrade - v3.9.3

Dec 4, 2025 at 1:45am UTC  –  Dec 4, 2025 at 2:15am UTC
Affected services
Arbitrum Mainnet [KeyInside]

Resolved
Dec 4, 2025 at 1:45am UTC

In line with the recent Arbitrum Foundation announcement, we will be upgrading our nodes on the scheduled date and time.

For detailed information regarding the upgrade, please refer to the release tag here:
- nitro: v3.9.3 Release Notes

Key Points to Note:
- There will be no network downtime during the upgrade.
- Temporary network interruptions may occur during the process.

If you have any concerns, questions, or need specific guidance on how this might impact your project, feel free to reach out to us at nodit@lambda256.io.

Thank you for your understanding and continued trust in our services.