> For the complete documentation index, see [llms.txt](https://paradiseland.gitbook.io/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://paradiseland.gitbook.io/wiki/custom-biomes/properties/base-version.md).

# Base version

```yaml
base-version: '1.13'
```

Specifies the minimum server version.

{% hint style="info" %}
**NOTE**:

* For **Legacy** versions, the range is 1.8.8 to 1.12.2.
* For **Flat** versions, the range is from 1.13 to the latest supported version.
  {% endhint %}

{% hint style="danger" %}
**ParadiseLand does not support upgrading worlds from legacy to flat versions of Minecraft**. Consequently, if you generate a world in 1.12.2, you cannot upgrade it to 1.13 or any version beyond that.
{% endhint %}