MEMORANDUM **
Brent Evan Webster appeals pro se from the district courts judgment dismissing his appeal from the bankruptcy courts order overruling his objection to the proof of claim filed by Alex Trail and Connie Trail. We have jurisdiction under 28 U.S.C. § 1291. We affirm.
In his opening brief, Webster fails to address how the district court erred by dismissing his appeal for lack of jurisdiction. As a result, Webster has waived his challenge to the district courts order. See Smith v. Marsh, 194 F.3d 1045, 1052 (9th Cir. 1999) (“[O]n appeal, arguments not raised by a party in its opening brief are deemed waived.”); Greenwood v. FAA, 28 F.3d 971, 977 (9th Cir. 1994) (“We will not manufacture arguments for an appellant, and a bare assertion does not preserve a claim․”).
We do not consider matters raised for the first time on appeal. See Mano-Y & M, Ltd. v. Field (In re Mortg. Store, Inc.), 773 F.3d 990, 998 (9th Cir. 2014); Padgett v. Wright, 587 F.3d 983, 985 n.2 (9th Cir. 2009).
AFFIRMED.