db/migrate/20130109015336_trunk_left.rb in card-1.91 vs db/migrate/20130109015336_trunk_left.rb in card-1.92

@@ -1,6 +1,6 @@
 # -*- encoding : utf-8 -*-
-class TrunkLeft < ActiveRecord::Migration
+class TrunkLeft < ActiveRecord::Migration[4.2]
   def up
     rename_column :card_references, :link_type, :ref_type
     rename_column :cards, :tag_id, :right_id
     rename_column :cards, :trunk_id, :left_id
   end