[Home](./index.md) > [bitburner](./bitburner.md) > [Bladeburner](./bitburner.bladeburner.md) > [upgradeSkill](./bitburner.bladeburner.upgradeskill.md)
## Bladeburner.upgradeSkill() method
You have to be employed in the Bladeburner division and be in BitNode-7 or have Source-File 7 in order to use this function.
Attempts to upgrade the specified Bladeburner skill.
Returns true if the skill is successfully upgraded, and false otherwise.
Signature:
```typescript
upgradeSkill(name: BladeburnerSkills): boolean;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| name | [BladeburnerSkills](./bitburner.bladeburnerskills.md) | |
Returns:
boolean
true if the skill is successfully upgraded, and false otherwise.
## Remarks
RAM cost: 4 GB