The U.S. Department of Justice announced Friday that it is suing the real estate company RealPage, alleging it engaged in a price-fixing scheme to drive up rents. The attorneys general of eight states – North Carolina, California, Colorado, Connecticut, Minnesota, Oregon, Tennessee, and Washington – are joining the Justice Department’s antitrust suit. This is the latest such move to target the company’s software algorithms. The lawsuit alleges that RealPage’s algorithmic pricing lets landlords to effectively collude and set rents above market rate.