Jose Eric Silva, federal prisoner #20105-148, appeals the district court’s dismissal without prejudice of his 28 U.S.C. § 2241 habeas petition for failure to exhaust his administrative remedies. The district court construed his petition as a civil rights action because Silva is challenging the conditions of his confinement. See Carson v. Johnson, 112 F.3d 818, 820 (5th Cir. 1997).

*939 As the district court correctly held, whether Silva’s petition is construed as a habeas petition or a civil rights action, he was required to exhaust his prison administrative remedies prior to seeking relief in the federal court, and the record reflects that he failed to do so. See Rourke v. Thompson, 11 F.3d 47, 49 & n. 6 (5th Cir. 1993).

On appeal, Silva has not addressed the district court’s dismissal of his petition for failure to exhaust. Because Silva has failed to contest the district court’s conclusion that he has failed to exhaust administrative remedies, any challenge to such conclusion is abandoned. See Brinkmann v. Dallas County Deputy Sheriff Abner, 813 F.2d 744, 748 (5th Cir. 1987); Yohey v. Collins, 985 F.2d 222, 224-25 (5th Cir. 1993); Fed. R.App. P. 28(a)(9). The dismissal of his petition without prejudice is AFFIRMED.