Can't migrate db rails, getting an error

i am getting an erro while migrating database.

Error is:

PG::UndefinedColumn: ERROR:  column roles.deleted_at does not exist

LINE 1: SELECT "roles".* FROM "roles" WHERE ("roles"."deleted_at" I... ^ : SELECT "roles".* FROM "roles" WHERE ("roles"."deleted_at" IS NULL)

Here is my a part of schema.rb

create_table "roles", :force => true do |t|
t.string   "name"
t.string   "title"
t.integer  "resource_id"
t.string   "resource_type"
t.datetime "created_at",    :null => false
t.datetime "updated_at",    :null => false
t.datetime "deleted_at"

end

I tried to make rails generate migration AddDeletedAtToRoles deleted_at

But it did not help