# Changing the Base URL

*Sometimes, you need to change the base URL of Bookstack, for example, when you switch from the localhost address to the internet exposed address.*

---

## Docker Compose

In your `compose.yaml`, modify the following environment variable:

```
APP_URL=<new_url>
```

## Bookstack Container

Open a terminal and type:

```
docker exec -it <bookstack_container> php /app/www/artisan bookstack:update-url <old_url> <new_url>
```

## Clear Cache

Open a terminal and type:

```
docker exec -it <bookstack_container>  php /app/www/artisan cache:clear
```