[gelöst]Update drupal mit Composer schlägt feht

Ich versuche meine Composerinstallation von Drupal upzudaten

Wenn ich composer outdated "drupal/*" eingebe erhalte ich die Meldung

drupal/core 8.7.2 8.7.3 Drupal is an open source content management platform powering millions of websites and applications.
drupal/search_api 1.x-dev 12015c5 1.x-dev 0cb9dcd Provides a generic framework for modules offering search capabilities.

Wenn ich nun composer update drupal/core --with-dependencies eingebe erhalte ich die Meldung:

> DrupalProject\composer\ScriptHandler::checkComposerVersion
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.
Generating autoload files
> DrupalProject\composer\ScriptHandler::createRequiredFiles

Was mache ich falsch?