Unknown key "viaIR" Error HH600: Compilation failed

I'm encountering the above error when I try to compile.

Here is my hardhat.config.ts

import { HardhatUserConfig } from "hardhat/config";
import "@nomicfoundation/hardhat-toolbox";

const config: HardhatUserConfig = {
  solidity: {
    version: "0.6.12",
    settings: {
      viaIR: true,

export default config;

1 Answer 1


viaIR: true may require version 0.8.13 and higher.

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