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Oct 6, 2026

Ethereum runs Glamsterdam Sepolia test with 200 million gas limit

Ethereum developers released an emergency Prysm v7.2.1 update to ensure validators automatically adopt a 200 million gas limit during the Glamsterdam upgrade's Sepolia testnet deployment. Without the patch, validators would have required manual configuration changes to participate in testing the major capacity increase ahead of mainnet activation.

Oct 6, 2026·5 sources
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Top claims

  • ▪Offchain Labs published Prysm software version 7.2.1 on GitHub on October 5, 2026 at 21:18 UTC to address a configuration issue ahead of the Glamsterdam Sepolia testnet upgrade.
  • ▪Developers warned that malicious builders could exploit the Sepolia testnet by repeatedly winning block auctions and withholding execution payloads because test ether is inexpensive.
  • ▪Node operators were required to update both their execution and consensus clients to versions supporting Amsterdam and Gloas before the Sepolia fork.

Topics

Ethereum upgradesEthereum staking & validatorsBlockchain scalability solutionsEthereumBlockchain technology