diff --git a/composer.json b/composer.json
index 0c941a0..f4e0c8a 100644
--- a/composer.json
+++ b/composer.json
@@ -16,16 +16,16 @@
     }
   ],
   "require": {
-    "php": "^7.2",
+    "php": "^7.2 || ^8.0",
     "roave/security-advisories": "dev-master",
     "event-engine/php-messaging": "^0.1",
     "event-engine/php-engine-utils": "^0.1",
     "psr/log": "^1.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.0",
-    "prooph/php-cs-fixer-config": "^0.3",
-    "satooshi/php-coveralls": "^1.0",
+    "phpunit/phpunit": "^8.0 || ^9.0",
+    "prooph/php-cs-fixer-config": "^0.4",
+    "php-coveralls/php-coveralls": "^2.0",
     "malukenho/docheader": "^0.1.4"
   },
   "autoload": {
diff --git a/src/DevNull.php b/src/DevNull.php
index ad99b44..69b9c22 100644
--- a/src/DevNull.php
+++ b/src/DevNull.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * This file is part of event-engine/php-logger.
- * (c) 2018-2019 prooph software GmbH <contact@prooph.de>
+ * (c) 2018-2021 prooph software GmbH <contact@prooph.de>
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/EchoLogger.php b/src/EchoLogger.php
index 3ca2dc6..41e016c 100644
--- a/src/EchoLogger.php
+++ b/src/EchoLogger.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * This file is part of event-engine/php-logger.
- * (c) 2018-2019 prooph software GmbH <contact@prooph.de>
+ * (c) 2018-2021 prooph software GmbH <contact@prooph.de>
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/LogEngine.php b/src/LogEngine.php
index a61e0be..234b68b 100644
--- a/src/LogEngine.php
+++ b/src/LogEngine.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * This file is part of event-engine/php-logger.
- * (c) 2018-2019 prooph software GmbH <contact@prooph.de>
+ * (c) 2018-2021 prooph software GmbH <contact@prooph.de>
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/SimpleMessageEngine.php b/src/SimpleMessageEngine.php
index e7af557..555dc12 100644
--- a/src/SimpleMessageEngine.php
+++ b/src/SimpleMessageEngine.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * This file is part of event-engine/php-logger.
- * (c) 2018-2019 prooph software GmbH <contact@prooph.de>
+ * (c) 2018-2021 prooph software GmbH <contact@prooph.de>
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.