Holešky testnet will be shut down in the weeks after the Fusaka upgrade is finalized; validators and staking operators are advised to migrate to the Hoodi testnet now. The Holešky testnet sunset prepares Ethereum for Fusaka and further mainnet launches planned for late 2025.
Holešky sunset: planned migration to Hoodi testnet
Fusaka upgrade slated for early November 2025; Holešky will be retired two weeks after Fusaka finalization.
Migration impact: validators must move staking infrastructure; Hoodi already supports Pectra and upcoming upgrades.
Holešky testnet sunset: Holešky will be retired after Fusaka finalization — migrate to Hoodi now. Read steps and dates from COINOTAG.
What is the Holešky testnet sunset?
Holešky testnet is being retired after two years of testing core Ethereum upgrades, with a formal shutdown occurring two weeks after the Fusaka upgrade is finalized. The Ethereum Foundation confirmed the planned end-of-life to consolidate testing on newer testnets such as Hoodi and Sepolia.
How will the shutdown affect validators and staking operators?
Validators on Holešky must migrate staking nodes and infrastructure to Hoodi or Sepolia to continue testing protocol upgrades. The Foundation reported early-2025 inactivity leaks on Holešky that created exit queues, prompting a migration plan initiated in March when Hoodi launched.
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Hoodi was created to provide a fresh, stable environment after Holešky experienced “extensive inactivity leaks” early in 2025. Hoodi already supports the Pectra update and is being prepared to activate Fusaka, making it the primary environment for protocol and staking integration testing.
Fusaka (Fulu-Osaka) is targeted for early November 2025 and consists of 11 Ethereum Improvement Proposals designed to improve rollup data availability and make node operation more efficient. The change aims to improve decentralization and reduce layer-2 transaction costs by distributing data availability workloads across validators.
The Ethereum Foundation recommends a staged migration: export validator keys and configs, redeploy clients on Hoodi, and verify Pectra/Fusaka compatibility. For contract testing, Sepolia is recommended as the current smart contract testnet.
Holešky will be shut down two weeks after Fusaka is finalized; Fusaka is proposed for the second half of September with mainnet targeting November. Operators should complete migration well before Fusaka mainnet activation to avoid service disruption.
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Source: https://en.coinotag.com/ethereums-holesky-testnet-could-be-retired-ahead-of-fusaka-with-migration-to-hoodi-planned/