diff --git a/.fixtures.yml b/.fixtures.yml
index 22f2f08..83bac10 100644
--- a/.fixtures.yml
+++ b/.fixtures.yml
@@ -1,7 +1,9 @@
 fixtures:
   repositories:
     'corosync': 'https://github.com/puppetlabs/puppetlabs-corosync'
-    'apt'    : 'git://github.com/puppetlabs/puppetlabs-apt'
+    'apt':
+      'repo': 'git://github.com/puppetlabs/puppetlabs-apt'
+      'ref': '1.8.0'
     'stdlib' : 'git://github.com/puppetlabs/puppetlabs-stdlib'
   symlinks:
     'openstack_extras': "#{source_dir}"