# Upgradeable

The `UpgradeableComponent` is designed for easy upgradability of tokenbound accounts.

The full contract code of the `UpgradableComponent` can be found [**here**](https://github.com/horuslabsio/TBA/blob/v3/src/components/upgradeable/upgradeable.cairo)**.**

## Functions

### `_upgrade`

```rust
fn _upgrade(
    ref self: ComponentState<TContractState>, 
    new_class_hash: ClassHash
);
```

The `_upgrade` function replaces the current contract's class hash with a new one provided by `new_class_hash`.&#x20;

#### Parameters

| Name             | Type        | Description                                                      |
| ---------------- | ----------- | ---------------------------------------------------------------- |
| `new_class_hash` | `ClassHash` | The class hash of the new contract implementation to upgrade to. |


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