Some examples described herein include a flexible hopper for a conveyor system. The flexible hopper may include a hopper weldment attached to a frame of the conveyor, wherein the hopper weldment surrounds a charge end of the conveyor, a flexible connector that is attached to the hopper weldment and configured to enable an opening of the flexible hopper to expand or contract, and a flexible skirt that is folded over the flexible connector. The flexible skirt may include a plurality of flexible strips configured to form an enclosure between the flexible connector and the hopper weldment.