Conduit

Optimism Mainnets - Ethereum Mainnet L1 - Fusaka Upgrade Notice
Complete·Under maintenance·Dec 3, 7:00 PM - 10:21 PM

Ethereum finalized the fork block correctly, all the rollups are operating normally.

Wed, Dec 3, 2025, 10:21 PM
(2 days ago)
·
Affected components
Optimism - Mainnets
Agglayer CDK - Mainnets
Updates

Complete

Ethereum finalized the fork block correctly, all the rollups are operating normally.

Wed, Dec 3, 2025, 10:21 PM

In progress

Maintenance has started

Wed, Dec 3, 2025, 07:00 PM(3 hours earlier)

Scheduled

Activation Time: 2025-12-03 21:49:11 UTC

The Fusaka upgrade will activate on Ethereum Mainnet L1 at the time above.

Action required:
If you or your partners operate an external OP L2 mainnet node, you must upgrade op-node and op-geth to the versions specified in the official notice reported below:

- op-node v1.16.2 - link

- op-geth v1.101603.5 - link

https://docs.optimism.io/notices/fusaka-notice#for-node-operators

Nodes not upgraded correctly will stop syncing after activation.

No action required if you:

  • Use Conduit RPC directly, or

  • Operate a Base L3 Mainnet - do not upgrade because the latest version does not support this configuration

Reach-out Conduit Support Team if you encounter any issue.

Fri, Nov 21, 2025, 11:18 AM(1 week earlier)
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