Ethereum devs won’t fork Glamsterdam on Hoodi until smart contract risks are resolved

Latest NewsPublishedNov 6, 2026Ethereum developers are investigating concerns tied to eight smart contract invariants tied to Glamsterdam’s EIP-8037 and EIP-8038.Ethereum core developers delayed the Glamsterdam upgrade’s implementation on the Hoodi testnet until security concerns tied to eight smart contract invariants are resolved.Some existing Ethereum projects rely on assumptions that certain operations would cost a specific amount of gas, which would be invalidated by Glamsterdam’s EIP-8037 and EIP-8038 because they change how gas is charged for certain operations, the Ethereum Foundation said in a Friday blog post.The decision followed an Oct. 13 report from smart contract auditor ChainSecurity, which found that the two Ethereum Improvement Proposals (EIPs) could break smart contracts that rely on fixed gas-related assumptions when external calls fail.Delaying the Hoodi testnet fork gives developers more time to identify potential smart contract issues and determine whether changes are needed before Glamsterdam progresses toward mainnet deployment. The Hoodi fork will not proceed until the issues are resolved, added the Ethereum Foundation’s post.Ethereum’s Glamsterdam upgrade...