How do I update from 8.4.5 to 8.5.0? I am trying to update Drupal core using Composer, but I am not able of doing it. I have followed a few blog posts, but nothing worked for me. This is the output of composer update drupal/core --with-dependencies.
There is some dependency changes with the new drupal version and drush but this should fix it.

composer update --with-dependencies drupal/core:~8.5 symfony/class-loader:~3.2.13 drush/drush:~9.@dev