[Standard] Ethereum [Mainnet|Testnets] Erigon Upgrade to v3.4.0 (Splashing Saga)

Scheduled for May 5, 07:30 - 15:30 UTC

Scheduled

We are upgrading our Ethereum Erigon nodes to v3.4.0. During the maintenance window, brief interruptions to RPC availability may occur. This is a major release with significant performance improvements, new RPC endpoints, and several breaking changes to RPC behavior. No data migration or re-sync required.

RPC Changes

eth_blobBaseFee — fixed Was returning incorrect values; now returns correct blob base fee.

eth_getBalance and historical queries — fixed Fixed block-not-found errors for certain historical block queries.

debug_traceCallMany — fixed Global BlockOverrides and StateOverrides were not being applied correctly; now fixed.

eth_feeHistory — improved Performance optimizations and pending block support added.

prestateTracer — fixed Diff mode now correctly includes deleted accounts, matching geth behavior.

trace_rawTransaction — added New endpoint to execute and trace a raw signed transaction without broadcasting it.

eth_getStorageValues — added New endpoint for batch fetching multiple storage slots in a single call.

https://github.com/erigontech/erigon/releases/tag/v3.4.0
Posted Apr 28, 2026 - 21:11 UTC
This scheduled maintenance affects: Ethereum (Mainnet — JSON-RPC API, Mainnet — Websockets API, Mainnet Beacon — REST API, Mainnet — Webhooks, Mainnet — Streams, Sepolia — JSON-RPC API, Sepolia — Websockets API, Sepolia Beacon — REST API, Sepolia — Webhooks, Sepolia — Streams, Hoodi - JSON-RPC API, Hoodi - Websockets API, Hoodi — Webhooks, Hoodi - Beacon REST API, Hoodi - Streams, Ethereum Mainnet BlockBook).