diff --git a/releases/specs/amd64/stage1-systemd-mu.spec b/releases/specs/amd64/stage1-systemd-mu.spec
new file mode 100644
index 00000000..3e97cf93
--- /dev/null
+++ b/releases/specs/amd64/stage1-systemd-mu.spec
@@ -0,0 +1,12 @@
+subarch: amd64
+target: stage1
+version_stamp: systemd-mergedusr-@TIMESTAMP@
+rel_type: default
+profile: default/linux/amd64/17.1/systemd/merged-usr
+snapshot: @TIMESTAMP@
+source_subpath: default/stage3-amd64-systemd-mergedusr-latest
+compression_mode: pixz
+update_seed: no
+update_seed_command: --update --deep --newuse @world
+portage_confdir: @REPO_DIR@/releases/portage/stages
+portage_prefix: releng
diff --git a/releases/specs/amd64/stage3-systemd-mu.spec b/releases/specs/amd64/stage3-systemd-mu.spec
new file mode 100644
index 00000000..2d710c99
--- /dev/null
+++ b/releases/specs/amd64/stage3-systemd-mu.spec
@@ -0,0 +1,10 @@
+subarch: amd64
+target: stage3
+version_stamp: systemd-mergedusr-@TIMESTAMP@
+rel_type: default
+profile: default/linux/amd64/17.1/systemd/merged-usr
+snapshot: @TIMESTAMP@
+source_subpath: default/stage1-amd64-systemd-mergedusr-@TIMESTAMP@
+compression_mode: pixz
+portage_confdir: @REPO_DIR@/releases/portage/stages
+portage_prefix: releng
diff --git a/tools/catalyst-auto-amd64.conf b/tools/catalyst-auto-amd64.conf
index e0a01f32..b2495007 100644
--- a/tools/catalyst-auto-amd64.conf
+++ b/tools/catalyst-auto-amd64.conf
@@ -12,6 +12,7 @@ SPECS_DIR=${REPO_DIR}/releases/specs/amd64
 SETS="
 	openrc
 	systemd
+	systemd_mu
 	livegui
 	nomultilib_openrc
 	nomultilib_systemd
@@ -35,6 +36,8 @@ SET_livegui_OPTIONAL_SPECS="livegui/livegui-stage1.spec livegui/livegui-stage2.s
 SET_systemd_SPECS="stage1-systemd.spec stage3-systemd.spec"
 SET_systemd_OPTIONAL_SPECS="stage3d-systemd.spec"
 
+SET_systemd_mu_SPECS="stage1-systemd-mu.spec stage3-systemd-mu.spec"
+
 SET_hardened_openrc_SPECS="hardened/stage1-openrc.spec hardened/stage3-openrc.spec"
 SET_hardened_openrc_OPTIONAL_SPECS="hardened/admincd-stage1.spec hardened/admincd-stage2.spec"
 
@@ -96,6 +99,9 @@ post_build() {
 	stage3-systemd.spec)
 		upload stage3-amd64-systemd-${TIMESTAMP}.tar.xz*
 		;;
+	stage3-systemd-mu.spec)
+		upload stage3-amd64-systemd-mergedusr-${TIMESTAMP}.tar.xz*
+		;;
 	stage3d-openrc.spec)
 		upload stage3-amd64-desktop-openrc-${TIMESTAMP}.tar.xz*
 		;;