diff --git a/src/MetaTech/Core/Singleton.php b/src/MetaTech/Core/Singleton.php
index cec918b..b2e3b74 100644
--- a/src/MetaTech/Core/Singleton.php
+++ b/src/MetaTech/Core/Singleton.php
@@ -1,4 +1,12 @@
 <?php
+/*
+ * This file is part of the silex-core package.
+ *
+ * (c) meta-tech.academy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace MetaTech\Core;
 
 /*!
diff --git a/src/MetaTech/Db/PdoConnector.php b/src/MetaTech/Db/PdoConnector.php
index 291406c..c833406 100644
--- a/src/MetaTech/Db/PdoConnector.php
+++ b/src/MetaTech/Db/PdoConnector.php
@@ -1,4 +1,12 @@
 <?php
+/*
+ * This file is part of the silex-core package.
+ *
+ * (c) meta-tech.academy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace MetaTech\Db;
 
 use PDO;
diff --git a/src/MetaTech/Db/PdoWrapper.php b/src/MetaTech/Db/PdoWrapper.php
index c2dc5fd..7f10f19 100644
--- a/src/MetaTech/Db/PdoWrapper.php
+++ b/src/MetaTech/Db/PdoWrapper.php
@@ -1,4 +1,12 @@
 <?php
+/*
+ * This file is part of the silex-core package.
+ *
+ * (c) meta-tech.academy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace MetaTech\Db;
 
 use MetaTech\Db\PdoConnector;
diff --git a/src/MetaTech/Db/Profile.php b/src/MetaTech/Db/Profile.php
index 8948cca..ef32d53 100644
--- a/src/MetaTech/Db/Profile.php
+++ b/src/MetaTech/Db/Profile.php
@@ -1,4 +1,12 @@
 <?php
+/*
+ * This file is part of the silex-core package.
+ *
+ * (c) meta-tech.academy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace MetaTech\Db;
 
 /*!
diff --git a/src/MetaTech/Silex/Provider/UserProvider.php b/src/MetaTech/Silex/Provider/UserProvider.php
index 2deb732..7d3d43c 100644
--- a/src/MetaTech/Silex/Provider/UserProvider.php
+++ b/src/MetaTech/Silex/Provider/UserProvider.php
@@ -1,4 +1,12 @@
 <?php
+/*
+ * This file is part of the silex-core package.
+ *
+ * (c) meta-tech.academy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 namespace MetaTech\Silex\Provider;
 
 use Symfony\Component\Security\Core\User\UserProviderInterface;