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Summer Smith Prime

Summary

This release includes the fork epoch for Electra ⚡ on Mainnet 🎉

v7.0.1 is a hotfix for the increased number of state cache misses reported following the v7.0.0 release last week.

If you have not yet upgraded to v7.0.0, it is recommended to upgrade straight to v7.0.1. These release notes also describe all of the changes in v7.0.0.

As a reminder, all mainnet users must upgrade to either v7.0.1 or v7.0.0 by the time of the fork on 7 May 2025. You must also update your execution client (e.g. Geth, Nethermind, Erigon, Besu or Reth).

⚠️ Breaking Changes ⚠️

You can upgrade to v7.0.1 from any v5 or v6 release. If you are upgrading from v5 you should make sure to read the v6 release notes to account for breaking changes between v5 and v6.

Upgrading to Lighthouse v7.0.1 should require no manual intervention aside from updating the binary or Docker image, as there are no changes to CLI flags that will prevent the node from starting. Mainnet users must upgrade before the Electra fork. Failure to upgrade in time will require a re-sync.

Once you upgrade to Lighthouse v7.0.1, you can downgrade to v6, but only prior to the Electra fork.

See the sections below for details on other backwards-incompatible changes:

• Deprecated CLI flags
• Minimum supported Rust version
• IPv6 by default
• Gas limit enforcement

⚠️ Deprecated CLI Flags ⚠️

The following beacon node flags have been deprecated. You should remove them, but the beacon node will still start if they are provided.

• --light-client-server

🦀 Minimum Supported Rust Version 🦀

We have updated the Minimum Supported Rust Version (MSRV) for this release from 1.80.0 to 1.83.0.

This is only relevant to users compiling Lighthouse from source.

You can update your Rust compiler using:

rustup update stable

IPv6 by Default

Lighthouse will now automatically listen on IPv6 if it detects a globally-routable address. We expect for the majority of users with IPv4-only setups that this change will have no effect, but that it will benefit users with correctly configured IPv6 stacks.

The default IPv6 listening port has been changed from port 9090 to port 9000 (same as IPv4) to make firewalling easier. The IPv6 port can be adjusted using the flag --port6.

... (truncated)

• e42406d Release v7.0.1 (#7374)
• 6c8770e Change default state cache size back to 128 (#7364)
• See full diff in compare view

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