You can upgrade the external database as suggested by the provider after stopping all the processes that are connected to the database (Puma, Sidekiq):
```shell
sudo gitlab-ctl stop puma
sudo gitlab-ctl stop sidekiq
```
Before proceeding with the upgrade, note the following:
- Before upgrading, review the [GitLab and PostgreSQL version compatibility table](../package-information/postgresql_versions.md)
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@@ -823,7 +830,7 @@
1. Shutdown the PostgreSQL 11 database host.
1. Edit `/etc/gitlab/gitlab.rb` and update the `gitlab_rails['db_host']` setting