❗ Mandatory Update for Base Sepolia testnet Nodes by October 14th, 2025
This release is required for operators running Base Sepolia testnet nodes to support Ethereum L1's Fusaka hardfork, happening on October 14th, at UTC 07:36:00 (unix timestamp 1760427360).
Warning
Once Fusaka activates on Sepolia, the beacon client passed with --l1.beacon must be configured to store all blob data. Lighthouse, for example, introduced a --supernode flag for this which they described here.
Note
This is optional but recommended for Base Mainnet nodes.
Changelog
op-node v1.14.1
Changelog
op-geth v1.101603.1
Changelog