# 2026.12 Infrastructure Changes

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# Changes on Application environment [Copy link to this section](https://docs.unique.ai/it-operators/installing-and-upgrading-unique/release-notes-and-calendar/release-notes-2026/release-2026-12/2026-12-infrastructure-changes#changes-on-application-environment "Copy link to this section")

| **Change** | **Environment Variable Name** | **Application Default Value**<br>**(if env variable unset)** | **Example** | **Required** | **Applications** | **Short Description** |
|------------|-------------------------------|-----------------------------------------------------------|-------------|--------------|------------------|-----------------------|
| Added      | `APP_ROOT`                    | `/app`                                                  | `/srv/runtime` | true         | - `web-app-chat-widget` | Point to volume that will serve static files |

| **Author** | Solution Engineering |