ABS closet flange too high. What to do?

The guys who roughed in the plumbing during my bathroom remodel apparently set the closet pipe too high. Either that or I didn't make the joint from the flange to the pipe correctly.

I finished the floor, and just tried to set the flange. It's all glued in and floating in the air with the bottom of the flange about 1/2 inch above the finished floor. What to do???

Thanks,
JRG