Any way to add a breakpoint in Bootstrap?

I use this in my project:

@media (min-width: 1600px) {
    @for $i from 1 through 12 {
        $width: $i / 12 * 100;
        .col-xl-#{$i} {
            width: unquote($width + '%');
            float: left;
        }
    }   
}