Wilma Pennington-Thurman appeals the district court’s 1 adverse grant of summary judgment on her claims under the Age Discrimination in Employment Act (ADEA). Upon de novo review, see Sutherland v. Mo. Dep’t of Corr., 580 F.3d 748, 750 (8th Cir. 2009), we agree with the district court that a release of claims — including ADEA claims — signed by Pennington-Thurman complied with the requirements of 29 U.S.C. § 626(f), that Pennington-Thurman’s waiver of claims was knowing and voluntary, and that the release was therefore enforceable. See 29 U.S.C. § 626(f) (listing specific requirements for waivers of rights or claims under ADEA); Warnebold v. Union Pac. R.R., 963 F.2d 222, 223-24 (8th Cir. 1992) (affirming summary judgment for employer on involuntarily terminated former employee’s discrimination claims; agreeing with district court that former employee’s waiver of claims was knowing and voluntary where release was written in clear and unambigu *575 ous language and was supported by consideration). Accordingly, we affirm. See 8th Cir. R. 47B.