diff --git a/spec/factories/expense.rb b/spec/factories/expense.rb
index f9bf6c3..9670768 100644
--- a/spec/factories/expense.rb
+++ b/spec/factories/expense.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 FactoryBot.define do
     factory :expense do
       sequence(:name) { |i| "Expense #{i}" }
diff --git a/spec/queries/expenses/total_query_spec.rb b/spec/queries/expenses/total_query_spec.rb
index 9e32716..46cffdf 100644
--- a/spec/queries/expenses/total_query_spec.rb
+++ b/spec/queries/expenses/total_query_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 require 'rails_helper'
 
 module Expenses