On Monday April 20th between 16:00 and 18:00 UTC, the Base Sepolia Testnet will undergo the v1 upgrade.
Operators of Base Sepolia Testnet nodes must upgrade to the 0.7.0, or greater, release of the github.com/base/base software. Preconfigured builds for this version are available from github.com/base/node with a corresponding release: https://github.com/base/node/releases/tag/v0.15.0.
NOTE It is mandatory that nodes run base-consensus and base-reth-node binaries. Op-geth and op-node clients are no longer supported.
We will be upgrading the mainnet RPC endpoints (https://mainnet.base.org) to point at a different set of nodes. There should be minimal disruption, however you may notice some requests are cancelled for a short period of time. Posted on
Apr 16, 2026 - 15:10 UTC
Resolved -
This is now mitigated. Safe head is progress normally for Sepolia Testnet
Apr 11, 00:45 UTC
Investigating -
We are currently investigating this issue. The Sepolia safe head is current stalled. This seems to affect op-node users running with consensus-layer sync mode.
Apr 10, 22:54 UTC