diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
index 312ddf8..e7dbb96 100644
--- a/.php-cs-fixer.php
+++ b/.php-cs-fixer.php
@@ -1,5 +1,19 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
+$fileHeaderComment = <<<'LICENSE'
+    This file is part of the beberlei/metrics project.
+
+    For the full copyright and license information, please view the LICENSE.md
+    file that was distributed with this source code.
+    LICENSE;
+
 $finder = PhpCsFixer\Finder::create()
     ->ignoreVCSIgnored(true)
     ->in(__DIR__)
@@ -16,6 +30,7 @@
         '@Symfony' => true,
         '@Symfony:risky' => true,
         'heredoc_indentation' => false,
+        'header_comment' => ['header' => $fileHeaderComment],
         'single_line_empty_body' => false,
         'ordered_types' => false, // From @PhpCsFixer but we don't want it
         'php_unit_internal_class' => false, // From @PhpCsFixer but we don't want it
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..a96b463
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,19 @@
+Copyright (c) 2004-preset Benjamin Eberlei
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/examples/castor.php b/examples/castor.php
index a07f644..dbe4049 100644
--- a/examples/castor.php
+++ b/examples/castor.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 use Castor\Attribute\AsTask;
 
 use function Castor\import;
diff --git a/examples/config/bundles.php b/examples/config/bundles.php
index 24b41a9..2f795c9 100644
--- a/examples/config/bundles.php
+++ b/examples/config/bundles.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 return [
     Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
     Doctrine\Bundle\DoctrineBundle\DoctrineBundle::class => ['all' => true],
diff --git a/examples/config/preload.php b/examples/config/preload.php
index db37723..f12aeeb 100644
--- a/examples/config/preload.php
+++ b/examples/config/preload.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 if (file_exists(dirname(__DIR__) . '/var/cache/prod/App_KernelProdContainer.preload.php')) {
     require dirname(__DIR__) . '/var/cache/prod/App_KernelProdContainer.preload.php';
 }
diff --git a/examples/importmap.php b/examples/importmap.php
index b73b323..277f3f6 100644
--- a/examples/importmap.php
+++ b/examples/importmap.php
@@ -1,16 +1,12 @@
 <?php
 
-/**
- * Returns the importmap for this application.
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * - "path" is a path inside the asset mapper system. Use the
- *     "debug:asset-map" command to see the full list of paths.
- *
- * - "entrypoint" (JavaScript only) set to true for any module that will
- *     be used as an "entrypoint" (and passed to the importmap() Twig function).
- *
- * The "importmap:require" command can be used to add new entries to this file.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
+
 return [
     'app' => [
         'path' => './assets/app.js',
diff --git a/examples/public/index.php b/examples/public/index.php
index 7fbc8cf..52e8536 100644
--- a/examples/public/index.php
+++ b/examples/public/index.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 use App\Kernel;
 
 require_once dirname(__DIR__) . '/vendor/autoload_runtime.php';
diff --git a/examples/src/Controller/HomepageController.php b/examples/src/Controller/HomepageController.php
index d5ba0c6..dcec4e1 100644
--- a/examples/src/Controller/HomepageController.php
+++ b/examples/src/Controller/HomepageController.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace App\Controller;
 
 use Beberlei\Metrics\Collector\CollectorInterface;
diff --git a/examples/src/Kernel.php b/examples/src/Kernel.php
index 779cd1f..19556ba 100644
--- a/examples/src/Kernel.php
+++ b/examples/src/Kernel.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace App;
 
 use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
diff --git a/examples/tests/bootstrap.php b/examples/tests/bootstrap.php
index 5160486..77f8bcf 100644
--- a/examples/tests/bootstrap.php
+++ b/examples/tests/bootstrap.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 use Symfony\Component\Dotenv\Dotenv;
 
 require dirname(__DIR__) . '/vendor/autoload.php';
diff --git a/src/Metrics/Collector/CollectorInterface.php b/src/Metrics/Collector/CollectorInterface.php
index 0844c26..0e3b1be 100644
--- a/src/Metrics/Collector/CollectorInterface.php
+++ b/src/Metrics/Collector/CollectorInterface.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/DoctrineDBAL.php b/src/Metrics/Collector/DoctrineDBAL.php
index 875072b..b8f6046 100644
--- a/src/Metrics/Collector/DoctrineDBAL.php
+++ b/src/Metrics/Collector/DoctrineDBAL.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/DogStatsD.php b/src/Metrics/Collector/DogStatsD.php
index 58f87f0..72ad0e4 100644
--- a/src/Metrics/Collector/DogStatsD.php
+++ b/src/Metrics/Collector/DogStatsD.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/GaugeableCollectorInterface.php b/src/Metrics/Collector/GaugeableCollectorInterface.php
index 3df4e28..fac7a00 100644
--- a/src/Metrics/Collector/GaugeableCollectorInterface.php
+++ b/src/Metrics/Collector/GaugeableCollectorInterface.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/Graphite.php b/src/Metrics/Collector/Graphite.php
index b0d7ccd..d06179b 100644
--- a/src/Metrics/Collector/Graphite.php
+++ b/src/Metrics/Collector/Graphite.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/InMemory.php b/src/Metrics/Collector/InMemory.php
index c9d1771..a054792 100644
--- a/src/Metrics/Collector/InMemory.php
+++ b/src/Metrics/Collector/InMemory.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/InfluxDB.php b/src/Metrics/Collector/InfluxDB.php
index 75ba748..19e8590 100644
--- a/src/Metrics/Collector/InfluxDB.php
+++ b/src/Metrics/Collector/InfluxDB.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/Logger.php b/src/Metrics/Collector/Logger.php
index 64a1159..2f923b5 100644
--- a/src/Metrics/Collector/Logger.php
+++ b/src/Metrics/Collector/Logger.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/NullCollector.php b/src/Metrics/Collector/NullCollector.php
index 898c010..5920334 100644
--- a/src/Metrics/Collector/NullCollector.php
+++ b/src/Metrics/Collector/NullCollector.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/Prometheus.php b/src/Metrics/Collector/Prometheus.php
index 4c18439..9be13d3 100644
--- a/src/Metrics/Collector/Prometheus.php
+++ b/src/Metrics/Collector/Prometheus.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/StatsD.php b/src/Metrics/Collector/StatsD.php
index 8e9f5b5..4c80244 100644
--- a/src/Metrics/Collector/StatsD.php
+++ b/src/Metrics/Collector/StatsD.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/TaggableCollectorInterface.php b/src/Metrics/Collector/TaggableCollectorInterface.php
index 80fcbb3..31650b5 100644
--- a/src/Metrics/Collector/TaggableCollectorInterface.php
+++ b/src/Metrics/Collector/TaggableCollectorInterface.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Collector/Telegraf.php b/src/Metrics/Collector/Telegraf.php
index 773e863..f27485b 100644
--- a/src/Metrics/Collector/Telegraf.php
+++ b/src/Metrics/Collector/Telegraf.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Collector;
diff --git a/src/Metrics/Factory.php b/src/Metrics/Factory.php
index 95aa387..f56c48b 100644
--- a/src/Metrics/Factory.php
+++ b/src/Metrics/Factory.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics;
diff --git a/src/Metrics/MetricsException.php b/src/Metrics/MetricsException.php
index 2100609..1bc25d3 100644
--- a/src/Metrics/MetricsException.php
+++ b/src/Metrics/MetricsException.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics;
diff --git a/src/Metrics/Utils/Box.php b/src/Metrics/Utils/Box.php
index ffe2fb1..844a5e1 100644
--- a/src/Metrics/Utils/Box.php
+++ b/src/Metrics/Utils/Box.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace Beberlei\Metrics\Utils;
 
 final class Box
diff --git a/src/MetricsBundle/BeberleiMetricsBundle.php b/src/MetricsBundle/BeberleiMetricsBundle.php
index 8eba1a6..7a8844a 100644
--- a/src/MetricsBundle/BeberleiMetricsBundle.php
+++ b/src/MetricsBundle/BeberleiMetricsBundle.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Bundle\MetricsBundle;
diff --git a/src/MetricsBundle/DependencyInjection/BeberleiMetricsExtension.php b/src/MetricsBundle/DependencyInjection/BeberleiMetricsExtension.php
index 48ec147..90456b1 100644
--- a/src/MetricsBundle/DependencyInjection/BeberleiMetricsExtension.php
+++ b/src/MetricsBundle/DependencyInjection/BeberleiMetricsExtension.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace Beberlei\Bundle\MetricsBundle\DependencyInjection;
 
 use Beberlei\Metrics\Collector\CollectorInterface;
diff --git a/src/MetricsBundle/DependencyInjection/Configuration.php b/src/MetricsBundle/DependencyInjection/Configuration.php
index 919c68f..f8fb443 100644
--- a/src/MetricsBundle/DependencyInjection/Configuration.php
+++ b/src/MetricsBundle/DependencyInjection/Configuration.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace Beberlei\Bundle\MetricsBundle\DependencyInjection;
 
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
diff --git a/tests/Metrics/Collector/InMemoryTest.php b/tests/Metrics/Collector/InMemoryTest.php
index d24eb90..d3f6da2 100644
--- a/tests/Metrics/Collector/InMemoryTest.php
+++ b/tests/Metrics/Collector/InMemoryTest.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Tests\Collector;
diff --git a/tests/Metrics/Collector/InfluxDBTest.php b/tests/Metrics/Collector/InfluxDBTest.php
index 4f38ac8..be44fc6 100644
--- a/tests/Metrics/Collector/InfluxDBTest.php
+++ b/tests/Metrics/Collector/InfluxDBTest.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Tests\Collector;
diff --git a/tests/Metrics/Collector/PrometheusTest.php b/tests/Metrics/Collector/PrometheusTest.php
index 7a3a945..0dde72b 100644
--- a/tests/Metrics/Collector/PrometheusTest.php
+++ b/tests/Metrics/Collector/PrometheusTest.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Metrics\Tests\Collector;
diff --git a/tests/Metrics/FactoryTest.php b/tests/Metrics/FactoryTest.php
index 109f812..123455e 100644
--- a/tests/Metrics/FactoryTest.php
+++ b/tests/Metrics/FactoryTest.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of the beberlei/metrics project.
+ *
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
+ */
+
 namespace Beberlei\Metrics\Tests;
 
 use Beberlei\Metrics\Collector\DoctrineDBAL;
diff --git a/tests/MetricsBundle/DependencyInjection/BeberleiMetricsExtensionTest.php b/tests/MetricsBundle/DependencyInjection/BeberleiMetricsExtensionTest.php
index f4989d4..7080858 100644
--- a/tests/MetricsBundle/DependencyInjection/BeberleiMetricsExtensionTest.php
+++ b/tests/MetricsBundle/DependencyInjection/BeberleiMetricsExtensionTest.php
@@ -1,14 +1,10 @@
 <?php
-/**
- * Beberlei Metrics.
- *
- * LICENSE
+
+/*
+ * This file is part of the beberlei/metrics project.
  *
- * This source file is subject to the MIT license that is bundled
- * with this package in the file LICENSE.txt.
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so I can send you a copy immediately.
+ * For the full copyright and license information, please view the LICENSE.md
+ * file that was distributed with this source code.
  */
 
 namespace Beberlei\Bundle\MetricsBundle\Tests\DependencyInjection;