diff --git a/nailgun/nailgun/fixtures/openstack.yaml b/nailgun/nailgun/fixtures/openstack.yaml
index b5b0a5a2ea..9664c3cf9c 100644
--- a/nailgun/nailgun/fixtures/openstack.yaml
+++ b/nailgun/nailgun/fixtures/openstack.yaml
@@ -2179,6 +2179,12 @@
                 suite: "trusty-updates/mitaka"
                 section: "main"
                 priority: 1080
+              - type: "deb"
+                name: "uca-proposed"
+                uri: "http://ubuntu-cloud.archive.canonical.com/ubuntu"
+                suite: "trusty-proposed/mitaka"
+                section: "main"
+                priority: 1080
               - type: "deb"
                 name: "mos"
                 uri: "http://{settings.MASTER_IP}:8080/{cluster.release.version}/ubuntu/x86_64"