diff --git a/db/migrate/20180118112809_add_datetaken_to_photos.rb b/db/migrate/20180118112809_add_datetaken_to_photos.rb
index 42afaf23b..03fae1075 100644
--- a/db/migrate/20180118112809_add_datetaken_to_photos.rb
+++ b/db/migrate/20180118112809_add_datetaken_to_photos.rb
@@ -1,4 +1,4 @@
-class AddDatetakenToPhotos < ActiveRecord::Migration
+class AddDatetakenToPhotos < ActiveRecord::Migration[4.2]
   def change
     add_column :photos, :date_taken, :datetime
   end
diff --git a/db/migrate/20180205000612_remove_shop.rb b/db/migrate/20180205000612_remove_shop.rb
index fa0fc8793..6977f127b 100644
--- a/db/migrate/20180205000612_remove_shop.rb
+++ b/db/migrate/20180205000612_remove_shop.rb
@@ -1,4 +1,4 @@
-class RemoveShop < ActiveRecord::Migration
+class RemoveShop < ActiveRecord::Migration[4.2]
   def up
     drop_table :order_items
     drop_table :orders
diff --git a/db/migrate/20180213005731_seed_usage.rb b/db/migrate/20180213005731_seed_usage.rb
index f768451d2..0a94cb71a 100644
--- a/db/migrate/20180213005731_seed_usage.rb
+++ b/db/migrate/20180213005731_seed_usage.rb
@@ -1,4 +1,4 @@
-class SeedUsage < ActiveRecord::Migration
+class SeedUsage < ActiveRecord::Migration[4.2]
   def change
     # # seed can be all sown, meaning there is none left
     add_column(:seeds, :finished, :boolean, default: false)