The team will sign veteran kicker Shayne Graham to replace Hartley, according to Fox Sports' Mike Garafolo.
Hartley, 27, has made 22-30 field goals this season with a long of 55 yards and has made all 41 of his extra point attempts. He hit one of this three attempts in a 27-16 loss to the St. Louis Rams on Sunday.
Last month, the team brought in competition for Hartley after he was going through some struggles and coach Sean Payton refused to call out Hartley after Sunday's performance saying that the team did not play well overall against the Saints.
"Whether it's [the kicker], the tackle position, whether it's a player on defense, the one thing I know I don't want to do is just repeat the process over and over again," Payton said. "So we're gonna look closely at what our options are and what gives us the best chance as we get ready to play this coming week and then obviously one week remaining."BANKS: Dolphins continue their unlikely resurgence; more Week 15 Snaps