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Ethereum Foundation warns some tools may break with Glamsterdam upgrade

The Ethereum Foundation says tools that rely on a hardcoded maximum gas limit must be updated before Glamsterdam activates on Thursday.

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The Ethereum Foundation says developers should prepare for the upcoming Glamsterdam upgrade, warning that gas-model changes could cause certain software to break. In a notice shared by its Protocol DevOps team, the foundation said any wallet, indexer, or gas estimator that depends on a hardcoded maximum gas limit will need updates.

The foundation urged teams to test on Plataberget, a public testnet intended to run for several months. Plataberget launched on Aug. 13, while Glamsterdam is scheduled to activate on the network Thursday, with deployments planned for the Sepolia and Hoodi testnets.

The Ethereum Foundation said the upgrade includes EIP-8037, which it described as introducing a separate state-gas dimension for operations that create new state. Under the change, the foundation said a plain ETH transfer to an existing account would still cost 21,000 gas, while sending ETH to a new account would add a state-gas charge, meaning developers should reassess transaction cost assumptions.

The notice also pointed to other components included in Glamsterdam, including enshrined proposer-builder separation, block-level access lists, and higher limits for contract and initialization-code sizes, according to the Ethereum Foundation’s Protocol DevOps team.

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