diff --git a/src/danog/PlaceHolder.php b/src/danog/PlaceHolder.php
index 508808d..134d0d3 100644
--- a/src/danog/PlaceHolder.php
+++ b/src/danog/PlaceHolder.php
@@ -1,6 +1,6 @@
 <?php
 /*
-Copyright 2016-2017 Daniil Gentili
+Copyright 2016-2018 Daniil Gentili
 (https://daniil.it)
 This file is part of MagicalSerializer.
 MagicalSerializer is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
diff --git a/src/danog/Serializable.php b/src/danog/Serializable.php
index a0d9195..5d9155c 100644
--- a/src/danog/Serializable.php
+++ b/src/danog/Serializable.php
@@ -1,6 +1,6 @@
 <?php
 /*
-Copyright 2016-2017 Daniil Gentili
+Copyright 2016-2018 Daniil Gentili
 (https://daniil.it)
 This file is part of MagicalSerializer.
 MagicalSerializer is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
diff --git a/src/danog/Serialization.php b/src/danog/Serialization.php
index 1fdd9d6..484a53d 100644
--- a/src/danog/Serialization.php
+++ b/src/danog/Serialization.php
@@ -1,6 +1,6 @@
 <?php
 /*
-Copyright 2016-2017 Daniil Gentili
+Copyright 2016-2018 Daniil Gentili
 (https://daniil.it)
 This file is part of MagicalSerializer.
 MagicalSerializer is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.