Lance Williams pleaded guilty to conspiracy to commit sex trafficking of a child, 18 U.S.C. §§ 1591(a), (c), 1594(c), and the District Court 1 sentenced him to 120 months in prison. On appeal, in a brief filed in accordance with Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967), Williams’s counsel challenges the District Court’s application of sentence enhancements under United States Sentencing Guidelines §§ 2G1.3(b)(3) and 4B1.5(b)(l), and Williams echoes the challenge to the latter enhancement in a pro se supplemental brief.

We have reviewed the evidence introduced at the sentencing hearing, which included testimony that Williams used a cellular telephone to place website advertisements soliciting persons to engage in sexual conduct with the minor and testimony that Williams facilitated several acts of prostitution involving the minor over the course of the conspiracy. We find no error in the application of either enhancement. See United States v. Kramer, 631 F.3d 900, 902 (8th Cir.) (setting forth the standard of review and applying Guidelines § 2G1.3(b)(3)), cert. denied, 563 U.S. 1039, 131 S.Ct. 2977, 180 L.Ed.2d 258 (2011); United States v. Rojas, 520 F.3d 876, 883 (8th Cir. 2008) (applying Guidelines § 4B1.5(b)). In addition, we have reviewed the record in accordance with Penson v. Ohio, 488 U.S. 75, 80, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), and we find no non-frivolous issues.

We affirm the judgment and grant counsel’s motion to withdraw.