(Solved) error when composer require laravel/passport using laravel 5.5

Using version ^5.0 for laravel/passport
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for laravel/passport ^5.0 -> satisfiable by laravel/passport[v5.0.0].
    - Conclusion: remove laravel/framework v5.5.35
    - Conclusion: don't install laravel/framework v5.5.35
    - laravel/passport v5.0.0 requires illuminate/http ~5.6 -> satisfiable by illuminate/http[v5.6.0, v5.6.1, v5.6.2, v5.6.3, v5.6.4, v5.6.5, v5.6.6, v5.6.7].
    - don't install illuminate/http v5.6.0|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.1|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.2|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.3|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.4|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.5|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.6|don't install laravel/framework v5.5.35
    - don't install illuminate/http v5.6.7|don't install laravel/framework v5.5.35
    - Installation request for laravel/framework (locked at v5.5.35, required as 5.5.*) -> satisfiable by laravel/framework[v5.5.35].

Laravel 5.5 use version 4 of laravel/passport. Version 5 requires Laravel 5.6

composer require laravel/passport:~4.0