diff --git a/examples/autoinstall.yaml b/examples/autoinstall.yaml
index c945dfb1..05638b73 100644
--- a/examples/autoinstall.yaml
+++ b/examples/autoinstall.yaml
@@ -15,6 +15,10 @@ network:
         name: "en*"
       dhcp6: yes
 debconf-selections: eek
+apt:
+  primary:
+    - arches: [default]
+      uri: "http://mymirror.local/repository/Apt/ubuntu/"
 packages:
   - package1
   - package2