In hardhat you can try setting `evmVersion` to a previous version whilst still using the latest compiler version: ```js solidity: { compilers: [ { version: `0.8.21`, settings: { optimizer: { enabled: true, runs: 15000 }, evmVersion: `paris` } }, ], }, ``` Polygon announced last week that they’ve just implemented PUSH0 on their zkEVM blockchain. I’ve tested the testnet and it works. zkEVM mainnet will work from 2023-09-11: [Polygon zkEVM: Dragon Fruit Upgrade (with New Opcode) Coming to Mainnet Beta][1] Hopefully the many other blockchains will follow, as developers want to be able to use the latest version. [1]: https://polygon.technology/blog/polygon-zkevm-dragon-fruit-upgrade-with-new-opcode-coming-to-mainnet-beta