Sum bucket aggregation loses formatting

I have number fields formatted to bytes, when I visualize them with Sum/Max/etc the graph formats properly with Bytes, however when I use the Sum Bucket aggregation, the formatting is lost. Is there a way to maintain the Bytes format when using Sum Bucket? I'm using Kibana 5.5.1

Thanks,
Ryan

This is something that has already been fixed in 5.5.2.

Oh great thanks! I'll upgrade now.