diff --git a/config/cloud.cfg.tmpl b/config/cloud.cfg.tmpl
index 558eab2433b..b0e8dd32794 100644
--- a/config/cloud.cfg.tmpl
+++ b/config/cloud.cfg.tmpl
@@ -359,7 +359,7 @@ system_info:
         security: https://deb.debian.org/debian-security
 {% elif variant in ["ubuntu", "unknown"] %}
   package_mirrors:
-    - arches: [i386, amd64]
+    - arches: [arm64, i386, amd64]
       failsafe:
         primary: http://archive.ubuntu.com/ubuntu
         security: http://security.ubuntu.com/ubuntu
@@ -369,7 +369,7 @@ system_info:
           - http://%(availability_zone)s.clouds.archive.ubuntu.com/ubuntu/
           - http://%(region)s.clouds.archive.ubuntu.com/ubuntu/
         security: []
-    - arches: [arm64, armel, armhf]
+    - arches: [armel, armhf]
       failsafe:
         primary: http://ports.ubuntu.com/ubuntu-ports
         security: http://ports.ubuntu.com/ubuntu-ports