If you upgrade to php@7.2, phpspec will start failing because Minds\Entities\Object is now a reserved word. It won't even compile. There are various additional errors that need resolving to upgrade to PHP 7.3... * Use of `continue` in `case` statements that need replacing with either `break` or `continue 2` * method signatures of classes that are extending an abstract class where the new method signatures do not match the method signatures of the abstract