diff --git a/base/hostconfig/adm01.sls b/base/hostconfig/adm01.sls
index 8b2d0c3..db63572 100644
--- a/base/hostconfig/adm01.sls
+++ b/base/hostconfig/adm01.sls
@@ -6,16 +6,6 @@ pki:
   - docker-registry.lan
 systemd:
   service:
-    container-container-registry:
-      Unit:
-        Description: Container Registry
-        After: network-online.target local-fs.target podman.socket
-        Before: haproxy.service
-      Service:
-        ExecStart: /usr/bin/podman start -a container-registry
-        ExecStop: /usr/bin/podman stop container-registry
-      Install:
-        WantedBy: multi-user.target
     container-dr-mirror:
       Unit:
         Description: docker.io mirror
@@ -26,6 +16,30 @@ systemd:
         ExecStop: /usr/bin/podman stop dr-mirror
       Install:
         WantedBy: multi-user.target
+    container-container-registry:
+      Unit:
+        Description: Container Registry
+        After: network-online.target local-fs.target podman.socket
+        Before: haproxy.service
+      Service:
+        ExecStart: /usr/bin/podman start -a container-registry
+        ExecStop: /usr/bin/podman stop container-registry
+      Install:
+        WantedBy: multi-user.target
+    container-registry-garbage-collect:
+      Unit:
+        Description: Container Registry garbage collect
+      Service:
+        ExecStart: /usr/bin/podman exec container-registry /bin/registry garbage-collect /etc/docker/registry/config.yml -m
+  timer:
+    container-registry-garbage-collect:
+      Unit:
+        Description: Timer for registry-garbage-collect
+      Timer:
+        OnCalendar: weekly
+        Persistent: true
+      Install:
+        WantedBy: timers.target
 haproxy:
   enabled: True
   overwrite: True