diff --git a/db/migrate/20170803153030_add_user_identity_table.rb b/db/migrate/20170803153030_add_user_identity_table.rb
index 8a1661c1a..29d439d0d 100644
--- a/db/migrate/20170803153030_add_user_identity_table.rb
+++ b/db/migrate/20170803153030_add_user_identity_table.rb
@@ -1,4 +1,4 @@
-class AddUserIdentityTable < ActiveRecord::Migration[5.1]
+class AddUserIdentityTable < ActiveRecord::Migration
   def change
     create_table :user_identities do |t|
       t.belongs_to :user, index: true