diff --git a/d3DicHandler.php b/d3DicHandler.php
index b9e9cdf..7ccb2bf 100644
--- a/d3DicHandler.php
+++ b/d3DicHandler.php
@@ -1,18 +1,18 @@
 <?php
 
 /**
- * This Software is the property of Data Development and is protected
- * by copyright law - it is NOT Freeware.
- * Any unauthorized use of this software without a valid license
- * is a violation of the license agreement and will be prosecuted by
- * civil and criminal law.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
  * https://www.d3data.de
  *
  * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
  * @author    D3 Data Development - Daniel Seifert <support@shopmodule.com>
- * @link      http://www.oxidmodule.com
+ * @link      https://www.oxidmodule.com
  */
 
+declare(strict_types=1);
+
 namespace D3\DIContainerHandler;
 
 use d3DIContainerCache;
diff --git a/d3DicHandlerInterface.php b/d3DicHandlerInterface.php
index f81c1d7..1d1d156 100644
--- a/d3DicHandlerInterface.php
+++ b/d3DicHandlerInterface.php
@@ -1,5 +1,18 @@
 <?php
 
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <support@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
 namespace D3\DIContainerHandler;
 
 /**
diff --git a/d3DicUtilities.php b/d3DicUtilities.php
index 0284750..9684c8c 100644
--- a/d3DicUtilities.php
+++ b/d3DicUtilities.php
@@ -1,18 +1,18 @@
 <?php
 
 /**
- * This Software is the property of Data Development and is protected
- * by copyright law - it is NOT Freeware.
- * Any unauthorized use of this software without a valid license
- * is a violation of the license agreement and will be prosecuted by
- * civil and criminal law.
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
  * https://www.d3data.de
  *
  * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
  * @author    D3 Data Development - Daniel Seifert <support@shopmodule.com>
- * @link      http://www.oxidmodule.com
+ * @link      https://www.oxidmodule.com
  */
 
+declare(strict_types=1);
+
 namespace D3\DIContainerHandler;
 
 class d3DicUtilities
diff --git a/definitionFileContainer.php b/definitionFileContainer.php
index 3163dbe..45452b1 100644
--- a/definitionFileContainer.php
+++ b/definitionFileContainer.php
@@ -1,5 +1,18 @@
 <?php
 
+/**
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * https://www.d3data.de
+ *
+ * @copyright (C) D3 Data Development (Inh. Thomas Dartsch)
+ * @author    D3 Data Development - Daniel Seifert <support@shopmodule.com>
+ * @link      https://www.oxidmodule.com
+ */
+
+declare(strict_types=1);
+
 namespace D3\DIContainerHandler;
 
 class definitionFileContainer