Arthur Hosea Salazar, Jr., is serving a 120-month sentence for possession with intent to distribute five grams or more of crack cocaine. The sentence was the mandatory minimum sentence, triggered by Salazar’s 1992 conviction for cocaine possession. Salazar appeals the district court’s denial of his motion for a reduced sentence under 18 U.S.C. § 3582(c)(2).

Section 3582(c)(2) permits the discretionary modification of a defendant’s sentence where the sentence is “based on a sentencing range that has subsequently been lowered by the Sentencing Commission.” § 3582(c)(2); see United States v. Kelly, 716 F.3d 180, 181 (5th Cir. 2013). Amendment 750 of the Sentencing Guidelines lowered the base offense level for crack offenses in accordance with the Fair Sentencing Act of 2010. Id. at 180. However, because Salazar “was subject to a 10-year mandatory minimum sentence, the district court [was] not authorized to grant a reduction below that minimum.” Id. at 181. Salazar’s claim for a sentence reduction under § 3582 thus lacks arguable merit.

Salazar contends for the first time on appeal that his mandatory minimum sentence is unlawful in light of Alleyne v. United States, — U.S. -, 133 S.Ct. 2151, 2155, 186 L.Ed.2d 314 (2013), which held that any fact that increases the mandatory minimum sentence must be found by a jury or admitted by the defendant. He argues that Alleyne overruled Almendarez-Torres v. United States, 523 U.S. 224, 247, 118 S.Ct. 1219, 140 L.Ed.2d 350 (1998), which recognized that the fact of a prior conviction did not need to be proved to a jury in order to provide the ground for increasing a statutory sentence. We need not consider this wholly new contention because it was not raised in the district court. See Leverette v. Louisville Ladder Co., 183 F.3d 339, 342 (5th Cir. 1999). Nonetheless, we note that the Supreme Court in Alleyne declined to revisit *290 Almendarez-Torres. Alleyne, 133 S.Ct. at 2160 n. 1. The judgment is AFFIRMED.