diff --git a/classes/cluster/mcp-offline/infra/init.yml b/classes/cluster/mcp-offline/infra/init.yml
index 5f44e00..5d85397 100644
--- a/classes/cluster/mcp-offline/infra/init.yml
+++ b/classes/cluster/mcp-offline/infra/init.yml
@@ -7,7 +7,7 @@
     # Don't set it "false" before you configure sudo policies and enable power users.
     # linux_system_user_sudo: true
     docker_compose_image: apt:5000/compose:1.8.0
-    apt_mk_version: "2018.1"
+    apt_mk_version: "testing"
     aptly_server_hostname: apt
     aptly_server_address: 10.1.0.14
     linux_repo_refresh_db: true
diff --git a/classes/cluster/mcp-offline/infra/mirror b/classes/cluster/mcp-offline/infra/mirror
index a789a30..728360e 160000
--- a/classes/cluster/mcp-offline/infra/mirror
+++ b/classes/cluster/mcp-offline/infra/mirror
@@ -1 +1 @@
-Subproject commit a789a302a2a20b6d1728d617275da6060905d7f0
+Subproject commit 728360e2d13491bbf9c61da9e55fb0906ca08f5b
diff --git a/classes/system b/classes/system
index 9fb14af..bf33e25 160000
--- a/classes/system
+++ b/classes/system
@@ -1 +1 @@
-Subproject commit 9fb14af724f8c47bcf252659c794892614615a12
+Subproject commit bf33e258a6e91e6b1886cf2de8023488c0e95031