# Version change in lambda cloud errors

## post by KyleMeyers on Mar 2, 2025

I’m trying to upgrade the version on my Jupyter notebook to 3.12 just like [the docs](https://docs.lambdalabs.com/public-cloud/on-demand/getting-started/#how-do-i-upgrade-python) say:

```bash
sudo apt -y update && sudo apt -y install python3.12-full
```

But I get an error:

```yaml
The following packages have unmet dependencies:
libpython3.12-testsuite : Depends: python3.12 (>= 3.12.9-1+jammy1) but 3.12.8-1+jammy1 is to be installed
E: Unable to correct problems, you have held broken packages.
```

I found [a reddit thread](https://www.reddit.com/r/Ubuntu/comments/1h7vpmo/jammy_upgrade_python_fail/) where they seemed to solve the same issue, but they went through the files (`/etc/apt/sources.list.d/deadsnakes-ubuntu-ppa-jammy.list`) which I cannot seem to do on here.

What do I do?

## post by Calvin on Mar 6, 2025

Hi Kyle,

Just to be sure, you read the warning at the top of the doc you linked?

> Upgrading Python, that is, replacing the preinstalled Python version with a newer version, will break your instance.
>
> Instead of upgrading Python, you should install your desired version of Python alongside the preinstalled version, and use your desired version in a virtual environment.

If you are, and you’re attempting this via a Python venv, I’d recommend opening a ticket with us, [here](https://support.lambdalabs.com/hc/en-us/requests/new), so we can better assist you.