diff --git a/db/migrate/20171129172043_add_index_on_stream_entries.rb b/db/migrate/20171129172043_add_index_on_stream_entries.rb
index 478530c7f..181c4f288 100644
--- a/db/migrate/20171129172043_add_index_on_stream_entries.rb
+++ b/db/migrate/20171129172043_add_index_on_stream_entries.rb
@@ -1,6 +1,7 @@
 class AddIndexOnStreamEntries < ActiveRecord::Migration[5.1]
+  disable_ddl_transaction!
+
   def change
-    commit_db_transaction
     add_index :stream_entries, [:account_id, :activity_type, :id], algorithm: :concurrently
     remove_index :stream_entries, name: :index_stream_entries_on_account_id
   end
diff --git a/db/migrate/20171226094803_more_faster_index_on_notifications.rb b/db/migrate/20171226094803_more_faster_index_on_notifications.rb
index b2e53b82d..0273a4e7c 100644
--- a/db/migrate/20171226094803_more_faster_index_on_notifications.rb
+++ b/db/migrate/20171226094803_more_faster_index_on_notifications.rb
@@ -1,6 +1,7 @@
 class MoreFasterIndexOnNotifications < ActiveRecord::Migration[5.1]
+  disable_ddl_transaction!
+
   def change
-    commit_db_transaction
     add_index :notifications, [:account_id, :id], order: { id: :desc }, algorithm: :concurrently
     remove_index :notifications, name: :index_notifications_on_id_and_account_id_and_activity_type
   end