> For the complete documentation index, see [llms.txt](https://necroleague.gitbook.io/whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://necroleague.gitbook.io/whitepaper/ecosystem/tireless-workers/soul-based-upgrades.md).

# SOUL-Based Upgrades

{% hint style="warning" %}
This feature is not available yet
{% endhint %}

Tireless Workers can be upgraded using **SOUL**.

These upgrades:

* permanently enhance the Worker’s in-game capabilities
* are irreversible
* require SOUL consumption or locking

This system creates long-term utility for SOUL while giving Tireless Workers a progression path that extends beyond cosmetic value.