The opinion of the court was delivered by: Seybert, District Judge:
The Court is in receipt of Defendants' letter dated July 26, 2011 requesting that the Court: (1) dismiss this action for lack of prosecution against the seven Plaintiffs who have failed to keep their addresses current; (2) dismiss this action against any Plaintiff who does not sign the Complaint within thirty  days; and (3) to set a briefing schedule for Defendants' proposed 12(b)(6) motion. Defendants' motion is GRANTED IN PART and DENIED IN PART.
I. Dismissal for Lack of Prosecution
Defendants assert that seven of the Plaintiffs named in the Amended Complaint have been discharged from the Suffolk County Correctional Facility and have failed to apprise the Court of their new addresses. The Court is in receipt of letters from the Suffolk County Sheriff dated which advise the Court that:
Plaintiff Theodore Davis was discharged from custody on May 23, 2011 [Docket No. 126];
Plaintiff Charles Whidbee was discharged from custody on May 31, 2011 [Docket No. 129];
Plaintiff Darryl Isaac was discharged from custody on
May 20, 2011 [Docket No. 130]; Plaintiff Joseph Potter, Jr. was discharged from custody on May 19, 2011 [Docket No. 131]; Plaintiff Felipe Rovelo was discharged from custody on
May 16, 2011 [Docket No. 132]; and Plaintiff Christopher Sydnor was discharged from custody on May 27, 2011 [Docket No. 133].
The Court has not received any notice of change of address from any of the above Plaintiffs.*fn1 Defendants ask this Court to dismiss this action for failure to prosecute against those Plaintiffs who have failed to keep their addresses current.
"Courts have repeatedly recognized that dismissal [under FED. R. CIV. P. 41(b)] for failure to prosecute is appropriate where a plaintiff effectively disappears by failing to provide a current address at which he or she can be reached." Fate v. Doe, No. 07-CV-9256, 2008 WL 1752223, at *2 (S.D.N.Y. Apr. 16, 2008), adopted by 2008 WL 2661928 (S.D.N.Y. July 7, 2008); see also Dong v. United States, No. 02-CV-7751, 2004 WL 385117, at *3 (S.D.N.Y. March 2, 2004) (finding that "the very fact that Dong has been inaccessible for the last two months-without notifying the Court, the Government, or the Pro Se Office of a change of address-strongly suggests that he is not diligently pursuing this claim"); Ortiz v. United States, No. 01-CV-4665, 2002 WL 1492115, at *2 (S.D.N.Y. July 11, 2002) (dismissing complaint where "[p]laintiff has not even fulfilled his minimal obligation to keep the pro se office of this Court informed of his change of address").; Dumpson v. Goord, No. 00-CV-6039, 2004 WL 1638183, at *3 (W.D.N.Y. July 22, 2004) ("The demand that plaintiffs provide contact information is no esoteric rule of civil procedure, but rather the obvious minimal requirement for pursuing a lawsuit.").
However, Rule 41(b) dismissal is a harsh remedy to be used only in extreme circumstances, see LeSane v. Hall's Sec. Analyst, Inc., 239 F.3d 206, 209 (2d Cir. 2001), and "courts should be especially reluctant to dismiss for failure to prosecute where the plaintiff is acting or appearing pro se," Washington v. City of N.Y. Dep't of Corr., No. 08-CV-5978, 2010 WL 3199680, at *2 (S.D.N.Y. Aug. 12, 2010) (citing Theilmann v. Rutland Hosp., Inc., 455 F.2d 853, 855 (2d Cir. 1972) (per curiam). As such, the Court thinks that dismissal is premature, and Defendants' motion to dismiss for lack of prosecution is DENIED with leave to re-file. However, the Court ORDERS Davis, Whidbee, Isaac, Potter, Rovelo and Sydnor to provide the Court with a current address by August 30, 2011, and all Plaintiffs are warned that failure to keep the Court apprised of their current address will result in their dismissal as Plaintiffs with prejudice.
II. Dismissal for Failing to Sign the Complaint
Defendants also ask the Court to dismiss this action against any Plaintiff who does not sign the Amended Complaint within thirty  days. The Court notes that the Plaintiffs named in the original Complaint all signed that document and that the Plaintiffs seeking to be joined all signed the motion for joinder. However, the Amended Complaint, filed on June 17, 2011 is only signed by Ricky Lynch. Pursuant to FED. R. CIV. P. 11(a), "[e]very pleading, written motion, and other paper shall be signed by at least one attorney of record . . . or, if the party is not represented by an attorney, shall be signed by the party." Since a non-attorney pro se party may not represent another's interests, see Iannacone v. Law, 142 F.3d 553, 558 (2d Cir. 1998), every pro se Plaintiff must sign the Amended Complaint. Therefore, Defendants' request is GRANTED. Plaintiffs are ORDERED to file a copy of the June 17, 2011 Amended Complaint, signed by each of the twenty-seven named Plaintiffs, by August 30, 2011. The Court is aware that there is a pending motion to amend the Amended Complaint to add four additional plaintiffs--Daryl Miller, Dewayne Butler, Keith King and Ray Kelly. [Docket No. 67.] Miller, Butler, King and Kelly should not sign the Amended Complaint. The motion for joinder has ...