Unable to install with composer

I think that is due to the stability of hook event dispatcher 4 being RC.

Can you try

composer req drupal/change_labels drupal/hook_event_dispatcher:4@RC

And write here how it goes so the docs can be updated.

I just run :composer req drupal/change_labels drupal/hook_event_dispatcher:4@RC as suggested in #2 with no luck:

Problem 1
    - Root composer.json requires drupal/hook_event_dispatcher 4@RC, found drupal/hook_event_dispatcher[dev-1.x, dev-2.x, dev-3.x, dev-4.x, 1.0.0, ..., 1.x-dev (alias of dev-1.x), 2.0.0-beta1, ..., 2.x-dev (alias of dev-2.x), 3.0.0-alpha1, ..., 3.x-dev (alias of dev-3.x), 4.0.0-alpha1, ..., 4.x-dev (alias of dev-4.x)] but it does not match the constraint.
 
 Problem 2
    - drupal/change_labels 1.0.1 requires drupal/core_event_dispatcher ^3 -> satisfiable by drupal/core_event_dispatcher[3.0.0, ..., 3.3.4].
    - drupal/change_labels 1.0.0 requires drupal/core ^8 || ^9 -> found drupal/core[8.0.0, ..., 8.9.20, 9.0.0, ..., 9.5.11] but the package is fixed to 10.1.2 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - drupal/change_labels[1.0.2, ..., 1.0.3] require drupal/core ^9.2 || 10 -> found drupal/core[9.2.0, ..., 9.5.11, 10.0.0] but the package is fixed to 10.1.2 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.
    - drupal/change_labels[1.0.4, ..., 1.3.2] require drupal/hook_event_dispatcher ^3 || ^4 -> found drupal/hook_event_dispatcher[3.0.0-rc1, ..., 3.3.4, 4.0.0-rc1] but it conflicts with your root composer.json require (4@RC).
    - drupal/core_event_dispatcher[3.0.0, ..., 3.3.4] require drupal/hook_event_dispatcher * -> found drupal/hook_event_dispatcher[1.0.0, ..., 1.29.0, 2.0.0, ..., 2.5.0, 3.0.0-rc1, ..., 3.3.4, 4.0.0-rc1] but it conflicts with your root composer.json require (4@RC).
    - Root composer.json requires drupal/change_labels * -> satisfiable by drupal/change_labels[1.0.0, ..., 1.3.2].

Sorry I wrote the message with my phone. I meant

composer req drupal/change_labels drupal/hook_event_dispatcher:^4@RC

with a "^" char in front of the version.

I am still getting the same results.
Can anyone else to try to download this module via composer?

hook_event_dispatcher has a stable release now. It shouldn't give more problems