Setting up default language


we are running a current gitlab-ce on prem version. A new requirement came up: Change the default language for all gitlab users to German.
So I set up config.i18n.default_locale = :de in /opt/gitlab/embedded/service/gitlab-rails/config/application.rb and let git reconfigure. although de.yml is existing in /opt/gitlab/embedded/service/gitlab-rails/config/locales , it does not show any effect although when creating a new user.

Please help :slight_smile: