Flipping ribbing

Hi, on my topdown sweaters the ribbing often flips up toward the body of the sweater, rather than staying flat. Should I be using a larger needle? Is my ribbing too short? Any help would be appreciated!!:muah:

How many rows of ribbing are there?

What stitch pattern is above the ribbing?

If your ribbing is only a a couple of rows and you have stockinette above it, you may be getting a “curling” effect as if the edge was stockinette.