diff --git a/db/migrate/20170118005958_remove_antecedents_from_versions_of_tickets.rb b/db/migrate/20170118005958_remove_antecedents_from_versions_of_tickets.rb
index 8a4ed938..edd8fd93 100644
--- a/db/migrate/20170118005958_remove_antecedents_from_versions_of_tickets.rb
+++ b/db/migrate/20170118005958_remove_antecedents_from_versions_of_tickets.rb
@@ -1,5 +1,5 @@
 class RemoveAntecedentsFromVersionsOfTickets < ActiveRecord::Migration[5.0]
-  include VestalVersions
+  class Version < ActiveRecord::Base; end
 
   def up
     versions = Version.where("modifications like '%!ruby/object:TicketAntecedent%'")