Robert Earl Thomas, Jr. federal prisoner # 07315-078, appeals following the district court’s denial of his motion for modification of his sentence pursuant to 18 U.S.C. § 3582(c)(2), wherein he argued that the amendment of the crack cocaine Sentencing Guidelines resulted in a lowered sentencing range for his offense. The Government moves for summary affir-mance or dismissal of the appeal, or, alternatively, for an extension of time to file a brief.

Section 3582(c)(2) permits the discretionary modification of a defendant’s ■ sentence “when it is based upon a sentencing range that has subsequently been lowered by an amendment to the Guidelines, if such a reduction is consistent with the policy statements issued by the Sentencing Commission.” United States v. Gonzalez-Balderas, 105 F.3d 981, 982 (5th Cir. 1997). The district court’s decision whether to reduce a sentence is reviewed for an abuse of discretion; the court’s interpretation of the Guidelines is reviewed de novo. United States v. Doublin, 572 F.3d 235, 237 (5th Cir.), cert, denied, — U.S.—, 130 S.Ct. 517, 175 L.Ed.2d 366 (2009).

*546 “The crack cocaine guideline amendments do not apply to prisoners sentenced as career offenders.” United States v. Anderson, 591 F.3d 789, 791 (5th Cir. 2009). The district court thus did not abuse its discretion in denying Thomas’s § 3582(c)(2) motion. See id. at 790. Further, the Supreme Court’s decision in United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), is not applicable to § 3582(c)(2) proceedings. Doublin, 572 F.3d at 238.

The Government’s motion for summary affirmance is GRANTED. The alternative motion for an extension of time is DENIED as unnecessary.

AFFIRMED.