A tensioning system for a conveyor belt arrangement is provided. More particularly, but not exclusively, to a vertical belt tensioning system for an endless conveyor belt arrangement. The conveyor belt arrangement includes a drive pulley which is in use driven by an external drive, an idler pulley and an endless conveyor belt rotatably mounted about the pulleys. The conveyor belt arrangement also includes a belt tensioning arrangement for use in tensioning the endless conveyor belt, the tensioning arrangement including a displaceable take-up pulley, and an actuator for displacing the displaceable take-up pulley. The tensioning arrangement is characterized in that the displaceable take-up pulley is displaceable along a vertical axis.