diff --git a/manifests/curator.pp b/manifests/curator.pp
index 811a5a6..8c45ef2 100644
--- a/manifests/curator.pp
+++ b/manifests/curator.pp
@@ -28,7 +28,8 @@ class logstash::curator (
     }
   } else {
     package { 'elasticsearch-curator':
-      ensure   => 'latest',
+      # Pin until we add support for the new stuff in 4.0
+      ensure   => '3.5.1',
       provider => openstack_pip,
     }
   }