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Hardhat Upgrades: clarify ethers vs viem requirements #180

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Merged
ericglau merged 1 commit into from
Jun 10, 2026
Merged

Hardhat Upgrades: clarify ethers vs viem requirements #180

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2 changes: 1 addition & 1 deletion content/upgrades-plugins/hardhat-upgrades.mdx
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Expand Up @@ -20,7 +20,7 @@ $ npm install --save-dev @nomicfoundation/hardhat-ethers ethers # peer dependenc
```

<Callout>
Hardhat 3 supports both ethers and viem. This plugin uses `@nomicfoundation/hardhat-ethers` internally and loads it automatically. If your project uses viem, install `@nomicfoundation/hardhat-viem` and add it to your config alongside this plugin.
Hardhat 3 supports both ethers and viem. This plugin uses `@nomicfoundation/hardhat-ethers` internally and loads it automatically. If your project uses viem, install `@nomicfoundation/hardhat-viem` and add it to your config alongside this plugin: your own scripts and tests can use viem, while the plugin's functions take ethers contract factories from `connection.ethers` and return ethers contracts.
</Callout>

Register the `@openzeppelin/hardhat-upgrades` plugin in your [`hardhat.config.ts`](https://hardhat.org/config/):
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2 changes: 1 addition & 1 deletion content/upgrades-plugins/migrate-from-hardhat-2.mdx
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Expand Up @@ -22,7 +22,7 @@ npm install --save-dev hardhat @nomicfoundation/hardhat-ethers
```

<Callout>
**Using viem?** You can install both `@nomicfoundation/hardhat-ethers` and `@nomicfoundation/hardhat-viem`. The upgrades plugin uses ethers internally; your own scripts and tests can still use viem.
**Using viem?** You can install both `@nomicfoundation/hardhat-ethers` and `@nomicfoundation/hardhat-viem`. The upgrades plugin uses ethers internally; your own scripts and tests can still use viem. Note that the plugin's functions take ethers contract factories and return ethers contracts, so use `connection.ethers` when calling them.
</Callout>

## Migration
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