### Running a development version

If you want to stay on the bleeding-edge Home Assistant Core development branch, you can upgrade to `dev`.

{% caution %}
The `dev` branch is likely to be unstable. Potential consequences include loss of data and instance corruption.
{% endcaution %}

{% if page.installation == "os" or page.installation == "supervised" %}

1. Join the dev channel.

    ```bash
    ha supervisor options --channel dev
    ```

2. Reload the {% term "Home Assistant Supervisor" %}.

    ```bash
    ha supervisor reload
    ```

3. Update {% term "Home Assistant Core" %} to the latest dev version.

    ```bash
    ha core update --backup
    ```

    _The_ `--backup` _flag here ensures that you have a partial backup of your current setup incase you need to downgrade._

{% elsif page.installation == "container" %}

```bash
docker pull {{ site.installation.container }}:dev
```

**[You then need to recreate the container with the new image.](/installation/linux#install-home-assistant-container)**

{% elsif page.installation == "core" %}

1. Stop the Home Assistant service.

2. Switch to the user that is running Home Assistant.

    ```bash
    sudo -u homeassistant -H -s
    ```

3. Activate the virtual environment that Home Assistant is running in.

    ```bash
    source /srv/homeassistant/bin/activate
    ```

4. Download and install the version you want.

    ```bash
    pip3 install --upgrade git+https://github.com/home-assistant/core.git@dev
    ```

5. When that is complete, start the service again for it to use the new files.

{% endif %}