entrust: Class 'EntrustSetupTables' not found

I’m getting

PHP Fatal error:  Class 'EntrustSetupTables' not found in /var/www/rudolf-ordini/vendor/laravel/framework/src/Illuminate/Database/Migrations/Migrator.php on line 297
{"error":{"type":"Symfony\\Component\\Debug\\Exception\\FatalErrorException","message":"Class 'EntrustSetupTables' not found","file":"\/var\/www\/rudolf-ordini\/vendor\/laravel\/framework\/src\/Illuminate\/Database\/Migrations\/Migrator.php","line":297}}

Base confide and entrust setup. Following readmes

This is my composer.json require section

"require": {
    "laravel/framework": "4.2.*",
    "zizaco/confide": "3.2.x",
    "laravelbook/ardent": "dev-master",
    "zizaco/entrust": "dev-master"
},

Any clues?