diff --git a/config/mongoid.yml b/config/mongoid.yml
index 16405831..0d68cb7a 100644
--- a/config/mongoid.yml
+++ b/config/mongoid.yml
@@ -23,3 +23,4 @@ production:
   # database: <%= ENV['MONGOID_DATABASE'] %>
   <<: *defaults
   database: prototype_r4_ldap0229
+  slave_ok: true