diff --git a/boxes/common/install-salt b/boxes/common/install-salt
index 033742b..daab9ab 100755
--- a/boxes/common/install-salt
+++ b/boxes/common/install-salt
@@ -4,7 +4,7 @@ cache=`readlink -f .`
 rootfs="${cache}/rootfs"
 
 echo "installing salt"
-chroot $rootfs add-apt-repository -y ppa:saltstack/salt
+chroot $rootfs apt-add-repository -y ppa:saltstack/salt
 chroot $rootfs apt-get update
 chroot $rootfs apt-get install salt-minion -y --force-yes