# Sepolia Post-Merge Upgrade Announcement

DevFeed: [Sepolia Post-Merge Upgrade Announcement](<https://devfeed.tech/articles/sepolia-post-merge-upgrade-announcement-17029.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2022/08/03/sepolia-post-merge-upgrade>)

Author: EF Protocol Support

Published: 2022-08-03T00:00:00Z

Content type: release

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [announcement](<https://devfeed.tech/tags/announcement.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [networks](<https://devfeed.tech/tags/networks.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [protocol-announcements](<https://devfeed.tech/tags/protocol-announcements.md>), [upgrades](<https://devfeed.tech/tags/upgrades.md>)

## AI overview

The article announces a post-Merge execution-layer upgrade for the Sepolia testnet at block 1,735,371, expected on August 17, 2022. Node operators must upgrade their execution-layer clients before that block. The change adds EIP-2124 compatibility so nodes can identify peers that have completed The Merge; no other functionality is introduced or deprecated.

## Source excerpt

The Sepolia testnet will undergo a post-merge execution layer (EL) upgrade at block 1735371, expected on August 17, 2022 The upgrade will cause EL clients on the network to disconnect from peers which have not transitioned to proof-of-stake. It does not add additional functionality beyond this. Sepolia node operators must...