diff --git a/roles/global_defaults/tasks/_normalize_system.yml b/roles/global_defaults/tasks/_normalize_system.yml
index 53ad311..b8e12e6 100644
--- a/roles/global_defaults/tasks/_normalize_system.yml
+++ b/roles/global_defaults/tasks/_normalize_system.yml
@@ -12,8 +12,8 @@
       }}
     _mirror_defaults:
       debian: "https://deb.debian.org/debian/"
-      ubuntu: "http://mirror.ubuntu.com/ubuntu/"
-      ubuntu-lts: "http://mirror.ubuntu.com/ubuntu/"
+      ubuntu: "http://archive.ubuntu.com/ubuntu/"
+      ubuntu-lts: "http://archive.ubuntu.com/ubuntu/"
   ansible.builtin.set_fact:
     system_cfg:
       # --- Identity & platform ---
diff --git a/roles/global_defaults/tasks/system.yml b/roles/global_defaults/tasks/system.yml
index 30891a8..bca8439 100644
--- a/roles/global_defaults/tasks/system.yml
+++ b/roles/global_defaults/tasks/system.yml
@@ -38,8 +38,8 @@
     # Same as _normalize_system.yml — kept in sync manually.
     _mirror_defaults:
       debian: "https://deb.debian.org/debian/"
-      ubuntu: "http://mirror.ubuntu.com/ubuntu/"
-      ubuntu-lts: "http://mirror.ubuntu.com/ubuntu/"
+      ubuntu: "http://archive.ubuntu.com/ubuntu/"
+      ubuntu-lts: "http://archive.ubuntu.com/ubuntu/"
   ansible.builtin.set_fact:
     system_cfg: >-
       {{