Philip K. Sias, federal prisoner # 10304-035, was convicted of using and carrying a firearm during the commission of a violent crime, in violation of 18 U.S.C. § 924, and this court affirmed his conviction and sentence. United States v. Sias, 227 F.3d 244 (5th Cir. Sept.8, 2000). Sias now appeals the July 23, 2002, denial of his 18 U.S.C. § 3582(c)(2) motion filed July 16, 2002. After we remanded to the district court for a finding (to be returned to this court) on the timeliness of the notice of appeal from the July 23, 2002 order, Fed. R.App. P. 26 was amended to provide additional days for a notice of appeal. We need not decide whether it is “just and practicable” to ap *475 ply the new rule to the instant case. See Fed. R.App. P., Order of April 29, 2002. Regardless of the timeliness of the notice of appeal, Sias’s appeal is dismissed because it is frivolous. See United States v. Alvarez, 210 F.3d 309, 310 (5th Cir. 2000).

Sias argues that (1) his plea agreement may have been breached by the court’s decision to upwardly depart in arriving at his sentence and (2) the court failed to give notice of and justification for its upward departure. These arguments are not cognizable in an 18 U.S.C. § 3582(c)(2) motion as that motion is used only to raise an issue of the retroactive application of a subsequently lowered sentencing range. See United States v. Shaw, 30 F.3d 26, 29 (5th Cir. 1994). Sias also argues that Amendment 598 to the Sentencing Guidelines provides for a reduction in his sentence. Amendment 598 (effective November 1, 2000) is not listed in U.S.S.G. § 1B1.10 and therefore may not be applied retroactively on Sias’s motion. See United States v. Drath, 89 F.3d 216, 218 (5th Cir. 1996).

Sias’s appeal is frivolous because it lacks an arguable basis in law or fact. See McCoy v. Court of Appeals of Wisconsin Dist. 1, 486 U.S. 429, 439-40 & n. 10, 108 S.Ct. 1895, 100 L.Ed.2d 440 (1985). Accordingly, the appeal is DISMISSED. See 5th Cir. R. 42.2.