Brooks & DunnBrooks & Dunn, who began the countdown to their goodbye tour (aka the Last Rodeo) in Marysville, Calif., on April 23, have been forced to postpone a handful of shows "due to illness," according to their website.

The multi-award-winning duo postponed their June 18 show at Virginia Beach, Va., until July 11, and the June gig at Bristow, Va.'s Jiffy Lube Live has been rescheduled for Aug. 1.

The pair will also miss the June 22 Nashville Rising benefit show for flood relief at Nashville's Bridgestone Arena. The concert, of course, will still go on, hosted by country superstars Tim McGraw and Faith Hill, with performers including Taylor Swift, Miley Cyrus, Miranda Lambert, Blake Shelton and many others.

According to the duo's publicist, Ronnie Dunn was put on vocal rest for a few days, but will be back out for their remaining scheduled dates beginning on June 25 in Hartford, Conn.

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