diff --git a/debian/changelog b/debian/changelog
index c1b6895b..aa171cae 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+livecd-rootfs (2.705) hirsute; urgency=medium
+
+  * config: on hirsute build UC22 images
+
+ -- Dimitri John Ledkov <xnox@ubuntu.com>  Wed, 02 Dec 2020 11:05:55 +0000
+
 livecd-rootfs (2.704) hirsute; urgency=medium
 
   * riscv64: build preinstalled riscv64 image with uboot SPL and CIDATA.
diff --git a/live-build/auto/config b/live-build/auto/config
index 67e59108..34a765aa 100755
--- a/live-build/auto/config
+++ b/live-build/auto/config
@@ -381,25 +381,30 @@ case $IMAGEFORMAT in
 					UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS -c $CHANNEL"
 					;;
 				*)
+					if [ "$SUITE" = "focal" ]; then
+						CORE_MAJOR=20
+					else
+						CORE_MAJOR=22
+					fi
 					if [ "${MODEL}" = "pi" ]; then
 						MODEL=pi-armhf
 					fi
-					# Ubuntu Core 20
-					# Currently uc20 assertions do not support global
+					# Ubuntu Core 2x
+					# Currently uc2x assertions do not support global
 					# channel overrides, instead we have per-channel models
 					case $CHANNEL in
 						stable)
-							MODEL="ubuntu-core-20-${MODEL#pc-}"
+							MODEL="ubuntu-core-${CORE_MAJOR}-${MODEL#pc-}"
 							;;
 						candidate|beta|edge|dangerous)
-							MODEL="ubuntu-core-20-${MODEL#pc-}-${CHANNEL}"
+							MODEL="ubuntu-core-${CORE_MAJOR}-${MODEL#pc-}-${CHANNEL}"
 							;;
 						dangerous-*)
 							# That being said, the dangerous grade *does*
 							# support channel overrides, so we can use the
 							# dangerous model assertion and override the channel
 							# freely.
-							MODEL="ubuntu-core-20-${MODEL#pc-}-dangerous"
+							MODEL="ubuntu-core-${CORE_MAJOR}-${MODEL#pc-}-dangerous"
 							CHANNEL=${CHANNEL#dangerous-}
 							UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS -c $CHANNEL"
 							;;