diff --git a/maas/region/boot_sources/maas_ephemeral_v3/init.yml b/maas/region/boot_sources/maas_ephemeral_v3/init.yml
index 7406486..774395a 100644
--- a/maas/region/boot_sources/maas_ephemeral_v3/init.yml
+++ b/maas/region/boot_sources/maas_ephemeral_v3/init.yml
@@ -1,6 +1,6 @@
 parameters:
   _param:
-    maas_region_boot_sources_maas_ephemeral_v3_bs_url: http://mirror.mirantis.com/${_param:mcp_version}/maas-ephemeral-v3/
+    maas_region_boot_sources_maas_ephemeral_v3_bs_url: ${_param:linux_system_repo_update_url}/maas-ephemeral-v3/
   maas:
     region:
       boot_sources_delete_all_others: true
diff --git a/maas/region/single.yml b/maas/region/single.yml
index 309ef34..601b883 100644
--- a/maas/region/single.yml
+++ b/maas/region/single.yml
@@ -4,7 +4,7 @@
 parameters:
   _param:
     maas_admin_username: mirantis
-    maas_region_main_archive: http://mirror.mirantis.com/${_param:mcp_version}/ubuntu/
+    maas_region_main_archive: ${_param:linux_system_repo_update_url}/ubuntu/
   maas:
     cluster:
       enabled: true