diff --git a/spec/factories/expense.rb b/spec/factories/expense.rb
index d2db7cd..f794723 100644
--- a/spec/factories/expense.rb
+++ b/spec/factories/expense.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/group_affinities.rb b/spec/factories/group_affinities.rb
index 217f2a9..de2069e 100644
--- a/spec/factories/group_affinities.rb
+++ b/spec/factories/group_affinities.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/groups.rb b/spec/factories/groups.rb
index 659b125..3b73bdb 100644
--- a/spec/factories/groups.rb
+++ b/spec/factories/groups.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/guest.rb b/spec/factories/guest.rb
index 5a81e22..5fe1ad7 100644
--- a/spec/factories/guest.rb
+++ b/spec/factories/guest.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/table_arrangement.rb b/spec/factories/table_arrangement.rb
index e91e807..fd48313 100644
--- a/spec/factories/table_arrangement.rb
+++ b/spec/factories/table_arrangement.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/users.rb b/spec/factories/users.rb
index fd61bfa..69b6b6e 100644
--- a/spec/factories/users.rb
+++ b/spec/factories/users.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/factories/weddings.rb b/spec/factories/weddings.rb
index 14f7d96..70f947a 100644
--- a/spec/factories/weddings.rb
+++ b/spec/factories/weddings.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/expense_spec.rb b/spec/models/expense_spec.rb
index d6d5f89..6858913 100644
--- a/spec/models/expense_spec.rb
+++ b/spec/models/expense_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/group_spec.rb b/spec/models/group_spec.rb
index 1bf6ae3..2dbbe0b 100644
--- a/spec/models/group_spec.rb
+++ b/spec/models/group_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/guest_spec.rb b/spec/models/guest_spec.rb
index 711e5ca..30b927e 100644
--- a/spec/models/guest_spec.rb
+++ b/spec/models/guest_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/seat_spec.rb b/spec/models/seat_spec.rb
index 86140a2..8d77e35 100644
--- a/spec/models/seat_spec.rb
+++ b/spec/models/seat_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/tables_arrangement_spec.rb b/spec/models/tables_arrangement_spec.rb
index 66e61ac..653fe66 100644
--- a/spec/models/tables_arrangement_spec.rb
+++ b/spec/models/tables_arrangement_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index ae4a2d5..e5bbef4 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo
diff --git a/spec/models/wedding_spec.rb b/spec/models/wedding_spec.rb
index 5664367..5840b0a 100644
--- a/spec/models/wedding_spec.rb
+++ b/spec/models/wedding_spec.rb
@@ -1,3 +1,5 @@
+# Copyright (C) 2024 Manuel Bustillo
+
 # frozen_string_literal: true
 
 # Copyright (C) 2024 Manuel Bustillo