Mitchell Jackson, a federal prisoner serving concurrent 135-month sentences for drug-related crimes, appeals pro se district court’s ruling denying his petition *253 for a writ of audita querela through which he sought to be resentenced in light of the Supreme Court’s decision in United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). On appeal, Jackson concedes that he cannot raise a Booker claim through a 28 U.S.C. § 2255 proceeding, but argues that the inadequacy of § 2255 allows him to use the writ of audita querela to obtain postconviction relief.

Audita querela was an ancient writ used to attack the enforcement of a judgment after it was rendered. United States v. Holt, 417 F.3d 1172, 1174 (11th Cir. 2005) (per curiam). “We review de novo the question of whether a prisoner may challenge his sentence by filing a motion for a writ of audita querela. ” Id.

“[Fjederal courts may properly fill the interstices of the federal postconviction remedial framework through remedies available at common law.” Id. at 1175 (internal quotation omitted). The writ of audita querela, however, may not be granted when relief is cognizable under § 2255. 1 Id. Because Jackson is collaterally attacking his sentence as unconstitutional, the appropriate avenue of relief is § 2255. See id.

Federal courts must look beyond the labels of motions filed by pro se inmates to interpret them under whatever statute would provide relief. United States v. Jordan, 915 F.2d 622, 624-25 (11th Cir. 1990). Here, Jackson specifically requested that his motion not be recharacterized as a § 2255 motion. However, Jackson would be unable to obtain Booker relief even through a § 2255 motion, as Booker is not retroactively applicable to § 2255 cases on collateral review. Varela v. United States, 400 F.3d 864, 868 (11th Cir. 2005) (per curiam), ce rt. denied by — S.Ct. —, 126 S.Ct. 312, 163 L.Ed.2d 269 (2005). Therefore, the district court correctly denied Jackson’s motion. Accordingly, we affirm.

AFFIRMED.