diff --git a/roles/bodhi2/backend/files/f26-updates.mash b/roles/bodhi2/backend/files/f26-updates.mash
index cfeba117c8..76a01e082e 100644
--- a/roles/bodhi2/backend/files/f26-updates.mash
+++ b/roles/bodhi2/backend/files/f26-updates.mash
@@ -12,9 +12,9 @@ repoviewurl = http://download.fedoraproject.org/pub/fedora/linux/updates/26/%(ar
 repoviewtitle = "Fedora 26 Updates - %(arch)s"
 arches = armhfp i386 ppc64 ppc64le x86_64 aarch64
 hash_packages = True
-delta = False
-#delta_dirs = /pub/fedora/linux/releases/26/Everything/%(arch)s/os/,/mnt/koji/mash/updates/f26-updates/%(arch)s/
-#parent_repos = http://download.fedoraproject.org/pub/fedora/linux/releases/26/Everything/%(arch)s/os
+delta = True
+delta_dirs = /mnt/koji/compose/26/Fedora-26-20170705.0/compose/Everything/%(arch)s/os/,/mnt/koji/mash/updates/f26-updates/%(arch)s/
+parent_repos = https://kojipkgs.fedoraproject.org/compose/26/Fedora-26-20170705.0/compose/Everything//%(arch)s/os
 # point to branched till we release then use above
 #delta_dirs = /mnt/koji/compose/branched/latest-Fedora-26/compose/Everything/%(arch)s/os/
 #parent_repos = https://kojipkgs.fedoraproject.org/compose/branched/latest-Fedora-26/compose/Everything/%(arch)s/os/