> For the complete documentation index, see [llms.txt](https://developers.polymath.network/polymath/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.polymath.network/polymath/api/iupgradabletokenfactory.md).

# Interface to be implemented by upgradable token factories (IUpgradableTokenFactory.sol)

View Source: [contracts/interfaces/IUpgradableTokenFactory.sol](https://github.com/PolymathNetwork/polymath-core/tree/096ba240a927c98e1f1a182d2efee7c4c4c1dfc5/contracts/interfaces/IUpgradableTokenFactory.sol)

**IUpgradableTokenFactory**

## Functions

* [upgradeToken(uint8 \_maxModuleType)](/polymath/api/iupgradabletokenfactory.md#upgradetoken)

### upgradeToken

Used to upgrade a token

```javascript
function upgradeToken(uint8 _maxModuleType) external nonpayable
```

**Arguments**

| Name            | Type  | Description                     |
| --------------- | ----- | ------------------------------- |
| \_maxModuleType | uint8 | maximum module type enumeration |