# HOW TO UPDATE POSTGRES DATABASE

If you want to upgrade your database version (say from postgres 14 to 15)

1. Create a backup of your instance! Or at least a copy of the postgres folder!

2. Dump your database with the following command:

`docker exec -u pleroma pleroma_db pg_dump -Fc pleroma > db.dump`

3. Change the [image tag](https://hub.docker.com/_/postgres/) for your db under `docker-compose.yml`

4. Delete your existing postgres folder with `rm -rvf postgres`

5. Bring up only the database container with

`docker compose up db -d`

6. Restore your database backup into the new database with

`docker exec -i -u pleroma pleroma_db pg_restore -C -d postgres < db.dump`

7. Launch pleroma_web with the following command and watch for errors

`docker compose up web -d`

`docker compose logs web db -f`

Should there be any errors... well that's what backups are for! Restore from the backup you made.