diff --git a/config/initializers/rswag_api.rb b/config/initializers/rswag_api.rb
index c4462b2..5c46141 100644
--- a/config/initializers/rswag_api.rb
+++ b/config/initializers/rswag_api.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 Rswag::Api.configure do |c|
 
   # Specify a root folder where Swagger JSON files are located
diff --git a/config/initializers/rswag_ui.rb b/config/initializers/rswag_ui.rb
index 30172aa..9540ca4 100644
--- a/config/initializers/rswag_ui.rb
+++ b/config/initializers/rswag_ui.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 Rswag::Ui.configure do |c|
 
   # List the Swagger endpoints that you want to be documented through the
diff --git a/spec/requests/groups_spec.rb b/spec/requests/groups_spec.rb
index 4dcfd71..eb96268 100644
--- a/spec/requests/groups_spec.rb
+++ b/spec/requests/groups_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 require 'swagger_helper'
 
 RSpec.describe 'groups', type: :request do
diff --git a/spec/swagger_helper.rb b/spec/swagger_helper.rb
index 2cae0bb..c9479c3 100644
--- a/spec/swagger_helper.rb
+++ b/spec/swagger_helper.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 require 'rails_helper'