diff --git a/releases/specs/x86/i686/stage1-systemd-mu.spec b/releases/specs/x86/i686/stage1-systemd-mu.spec
new file mode 100644
index 00000000..d7bb1aab
--- /dev/null
+++ b/releases/specs/x86/i686/stage1-systemd-mu.spec
@@ -0,0 +1,12 @@
+subarch: i686
+target: stage1
+version_stamp: systemd-mergedusr-@TIMESTAMP@
+rel_type: default
+profile: default/linux/x86/17.0/systemd/merged-usr
+snapshot: @TIMESTAMP@
+source_subpath: default/stage3-i686-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/x86/i686/stage3-systemd-mu.spec b/releases/specs/x86/i686/stage3-systemd-mu.spec
new file mode 100644
index 00000000..22a40f2c
--- /dev/null
+++ b/releases/specs/x86/i686/stage3-systemd-mu.spec
@@ -0,0 +1,10 @@
+subarch: i686
+target: stage3
+version_stamp: systemd-mergedusr-@TIMESTAMP@
+rel_type: default
+profile: default/linux/x86/17.0/systemd/merged-usr
+snapshot: @TIMESTAMP@
+source_subpath: default/stage1-i686-systemd-mergedusr-@TIMESTAMP@
+compression_mode: pixz
+portage_confdir: @REPO_DIR@/releases/portage/stages
+portage_prefix: releng
diff --git a/tools/catalyst-auto-x86.conf b/tools/catalyst-auto-x86.conf
index b0a70c76..4a740f57 100644
--- a/tools/catalyst-auto-x86.conf
+++ b/tools/catalyst-auto-x86.conf
@@ -13,6 +13,7 @@ SETS="
 	i486_openrc
 	i686_openrc
 	i686_systemd
+	i686_systemd_mu
 	hardened_openrc
 	musl
 "
@@ -22,6 +23,7 @@ SET_i486_openrc_OPTIONAL_SPECS="i486/installcd-stage1-openrc.spec i486/installcd
 
 SET_i686_openrc_SPECS="i686/stage1-openrc.spec i686/stage3-openrc.spec"
 SET_i686_systemd_SPECS="i686/stage1-systemd.spec i686/stage3-systemd.spec"
+SET_i686_systemd_mu_SPECS="i686/stage1-systemd-mu.spec i686/stage3-systemd-mu.spec"
 
 SET_hardened_openrc_SPECS="hardened/stage1-openrc.spec hardened/stage3-openrc.spec"
 SET_hardened_openrc_OPTIONAL_SPECS="hardened/admincd-stage1-openrc.spec hardened/admincd-stage2-openrc.spec"
@@ -71,6 +73,9 @@ post_build() {
 	i686/stage3-systemd.spec)
 		upload stage3-i686-systemd-${TIMESTAMP}.tar.xz*
 		;;
+	i686/stage3-systemd-mu.spec)
+		upload stage3-i686-systemd-mergedusr-${TIMESTAMP}.tar.xz*
+		;;
 	esac
 	popd >/dev/null || exit