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ETH Summary
Ethereum's proposed Gas fee repricing may expose contracts that rely on fixed Gas assumptions, but most applications should not be affected by the Glamestead upgrade.
Mainnet transaction testing found limited compatibility issues, with some contracts requiring higher Gas limits and others requiring more in-depth code modifications.
EIP-8037 and EIP-8038 are designed to more accurately reflect state costs and support Ethereum's capacity goals, while developers test contracts before deployment.
Ethereum developers warn: Glamestead Gas repricing may affect some L1 contracts
Ethereum developers warn that some L1 contracts may encounter problems during Glamestead's planned Gas repricing. According to the Ethereum Foundation, EIP-8037 and EIP-8038 will change the cost of creating and accessing states. These changes can disrupt contracts that rely on fixed Gas values or execution assumptions. However, developers say most Ethereum contracts should not be affected by the planned repricing. Mainnet trading testing identified a small number of contracts that could crash or degrade performance.
Ethereum Gas reform may expose hard-coded contract assumptions
EIP-8037 and EIP-8038 are designed to make Gas prices better reflect the resources required to operate in different states. The last time Ethereum adjusted its status operating pricing was in the Berlin upgrade in 2021. Since then, as applications store more information on the blockchain, Ethereum's state has expanded significantly. Therefore, developers want state-related costs to better match the resources consumed by these operations.
The Ethereum Foundation replayed historical mainnet transactions under the proposed Glamsterdam-pricing plan. Most transactions produce the same results, while some transactions require different Gas limits under the proposed rules.
(The Ethereum Foundation issued a reminder on August 25, 2026: Please note for developers maintaining L1 contracts-the Glamestead upgrade will include Gas re-pricing (EIP-8037, EIP-8038), changing state creation and access costs. Most contracts are not affected, but a few contracts may crash or degrade performance due to not being updated. Affected contracts rely on hard-coded Gas assumptions.)
In addition, affected contracts can be resolved by increasing the Gas limit. However, there are still a few contracts that fail even when limits are increased, indicating deeper compatibility issues. According to the foundation, some contracts rely on hard-coded Gas assumptions that repricing could invalidate. These assumptions may involve fixed Gas values, Solidity's 2300 Gas allowance, or logic that relies on remaining Gas.
The foundation has begun contacting the builders of the affected contracts. At the same time, developers can test contracts based on the proposed plan before deploying GlamAmsterdam to the Ethereum main network. The Platåberget environment can be used to identify compatibility issues related to upgrades. The Gas adjustment is part of Ethereum's efforts to increase Layer 1 capacity. This solution supports the goal of triple basic throughput. As a result, developers view repricing as an important step before further increasing the network Gas limit. Glamstam merged changes to the execution and consensus layers into one Ethereum upgrade.
Conclusion
Ethereum developers have identified the L1 contract risks posed by the Glamsburg Gas reform. Most contracts are not affected, but builders using hard-coded Gas assumptions may need to update them before mainnet deployment.
