[Home](./index.md) > [bitburner](./bitburner.md) > [Corporation](./bitburner.corporation.md) > [unlockUpgrade](./bitburner.corporation.unlockupgrade.md) ## Corporation.unlockUpgrade() method Unlock an upgrade Signature: ```typescript unlockUpgrade(upgradeName: string): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | upgradeName | string | Name of the upgrade | Returns: void