Prisma migrate dev keeps wanting to drop my sequence

-- AlterTable
ALTER TABLE "Order" ADD COLUMN     "orderNumber" INTEGER DEFAULT nextval('order_number_seq');

-- CreateIndex
CREATE UNIQUE INDEX "Order_orderNumber_key" ON "Order"("orderNumber");

-- AlterTable
ALTER TABLE "Order" ALTER COLUMN "orderNumber" SET DEFAULT nextval('order_number_seq'),
ALTER COLUMN "orderNumber" DROP DEFAULT;
DROP SEQUENCE "order_number_seq";

CREATE SEQUENCE order_number_seq START 1000000;