diff --git a/centos/http/7/ks.cfg b/centos/http/7/ks.cfg
index c826c681a..2b32f982d 100644
--- a/centos/http/7/ks.cfg
+++ b/centos/http/7/ks.cfg
@@ -33,6 +33,7 @@ wget
 nfs-utils
 net-tools
 bzip2
+deltarpm
 -fprintd-pam
 -intltool
 
diff --git a/fedora/http/ks.cfg b/fedora/http/ks.cfg
index 41c8557e8..40221d5a1 100644
--- a/fedora/http/ks.cfg
+++ b/fedora/http/ks.cfg
@@ -28,6 +28,7 @@ tar
 wget
 nfs-utils
 net-tools
+deltarpm
 -linux-firmware
 -plymouth
 -plymouth-core-libs