Cannot drop constraint because other objects depend on it

[godd0t]

django.db.utils.InternalError: cannot drop constraint shop_order_pkey on table shop_order because other objects depend on it

DETAIL: constraint shop_reviews_order_id_e2796d7b_fk_shop_order_id on table shop_reviews depends on index shop_order_pkey
constraint shop_orderitems_order_id_f7d02868_fk_shop_order_id on table shop_orderitems depends on index shop_order_pkey