Kerry Scott Sutton appeals the sentence imposed by the district court * after Sutton pleaded guilty to being a felon in possession of a firearm, in violation of 18 U.S.C. § 922(g)(1). In a written plea agreement, Sutton waived the right to appeal his sentence, with exceptions not applicable here. Sutton does not argue his appeal waiver was unknowing or involuntary, or enforcement would result in a miscarriage of justice. We thus enforce *154 Sutton’s appeal waiver and dismiss his appeal. See United States v. Blue Coat, 340 F.3d 539, 541-42 (8th Cir. 2003).