How to update Laravel to latest minor?

I've started only recently working on Laravel.

I've only few 'pages' (routes+views and a single model) until now.

If I check artisan version I got

php artisan --version
Laravel Framework 5.4.19

I'd like to update ALL to 5.4.23, to keep FW and vendor packages updated.

What's the rigt procedure?

I started the project using laravel new <project-name>