I am unable to update or install version 4.2.2 of Simple Sitemap via Composer. Instead, it installs 4.2.1. I tried entirely deleting the module files and all references to it in composer.json, composer.lock, vendor/composer/installed.json and vendor/composer/installed.php, and it still installed 4.2.1. I ended up manually downloading the tar.gz file.
composer require 'drupal/simple_sitemap:^4.2'
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4.2
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@matthewv789 I can't reproduce this problem on a fresh install. Try composer why-not drupal/simple_sitemap 4.2.2 or composer require "drupal/simple_sitemap:4.2.2" --dry-run to get more details. Most likely the problem is related to your environment or Composer configuration.