Waiting for AJAX to complete inside the $ .each loop

I can not get jQuery to disable work if called from a loop $.each.

var deferreds = [],
    ids = ['1234', '4321'],
    users = [];

$.each(ids, function(i,v){
    deferreds.push(
        $.getJSON('api/users/'+v, function(i,v){
            users.push(v.username);
        })
    );
});

$.when($, deferreds).done(function(){
    console.log(users);
});