William White appeals after the district court 1 dismissed his action seeking a ruling that his 1985 state-court conviction was void. In the district court, he sought a writ of coram nobis, pursuant to the All Writs Act, 28 U.S.C. § 1651.

*903 Upon careful de novo review, see Adams v. American Family Mut. Ins. Co., 813 F.3d 1151, 1154 (8th Cir. 2016), we conclude that the dismissal was proper. Because White was challenging a state-court judgment, the district court lacked jurisdiction to grant a writ of coram nobis. See Finkelstein v. Spitzer, 455 F.3d 131, 133-34 (2d Cir. 2006) (per curiam). In addition, White could not invoke section 1651 as an independent source of jurisdiction. See Ark. Blue Cross and Blue Shield v. Little Rock Cardiology Clinic, P.A., 551 F.3d 812, 820-21 (8th Cir. 2009). Accordingly, we affirm. See 8th Cir. R. 47B.