ORDER

Reynaldo Escalante-Velazquez and a co-defendant sold two kilograms of cocaine to an informant. He pleaded guilty to conspiracy to possess with intent to distribute and, because the amount of cocaine was at least 500 grams, faced a presumptive statutory minimum of 5 years in prison. See 21 U.S.C. §§ 846, 841(a)(1), (b)(l)(B)(ii). In his plea agreement Escalante-Velazquez *584waived the right to appeal his conviction or sentence on any ground so long as the district court imposed a prison term within or below the guidelines range stipulated by the parties, which was 60 to 71 months. He was sentenced below that range to 51 months after the government moved to release him from the statutory minimum to reward him for providing substantial assistance. See 18 U.S.C. § 3553(e). Es-calante-Velazquez filed a notice of appeal despite the waiver, explaining to appointed counsel that he thinks 51 months in prison is too long. The lawyer asserts, however, that the appeal is frivolous and seeks to withdraw under Anders v. California, 386 U.S. 738, 744, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967). Escalante-Velazquez has not responded to counsel’s motion. See Cir. R. 51(b). We confine our review to counsel’s facially adequate brief. See United States v. Schuh, 289 F.3d 968, 973-74 (7th Cir. 2002).

We agree with counsel that an appeal would be frivolous. Not only is Escalante-Velazquez bound by his appellate waiver if his guilty plea was entered voluntarily, see United States v. Kilcrease, 665 F.3d 924, 929 (7th Cir. 2012); United States v. Sakellarion, 649 F.3d 634, 639 (7th Cir. 2011), but we lack jurisdiction to entertain claims that district judges undervalued a defendant’s cooperation when exercising authority under § 3553(e) to sentence below a statutory minimum, see 18 U.S.C. § 3742(a); United States v. Spann, 682 F.3d 565, 566 (7th Cir. 2012); United States v. Thomas, 11 F.3d 732, 735 (7th Cir. 1993). Escalante-Velazquez has told counsel that he does not wish to challenge his guilty plea, and thus counsel appropriately omits discussion about the plea colloquy and the voluntariness of the plea. See United States v. Konczak, 683 F.3d 348, 349 (7th Cir. 2012); United States v. Knox, 287 F.3d 667, 671 (7th Cir. 2002). Moreover, the only argument Escalante-Velazquez possibly could make is that the court undervalued his cooperation. Under 18 U.S.C. § 3553(e) a district court may consider only a defendant’s cooperation as a reason to go below the statutory minimum, Spann, 682 F.3d at 566; United States v. Johnson, 580 F.3d 666, 672-73 (7th Cir. 2009), and his sentence is already below that minimum.

The motion to withdraw is GRANTED, and the appeal is DISMISSED.