diff --git a/src/Composer/ComposerPackage.php b/src/Composer/ComposerPackage.php
index 5912451f5e81a0ceb955174338fbd242f0051477..57d4828ad0e2407a599642cea75a0fb6a3c36897 100644
--- a/src/Composer/ComposerPackage.php
+++ b/src/Composer/ComposerPackage.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -95,7 +95,7 @@ final class ComposerPackage implements ComposerPackageInterface
 
     private function getComposerJson(): array
     {
-        return $this->composerJson !== null ? $this->composerJson : $this->readComposerJson();
+        return \is_array($this->composerJson) ? $this->composerJson : $this->readComposerJson();
     }
 
     /**
diff --git a/src/Composer/ComposerPackageInterface.php b/src/Composer/ComposerPackageInterface.php
index 40218d5106bcc57e71c410c64c0f0e25b7ac2272..ab896cc2c7610d588cf4c3b4874efd6085fbb4f8 100644
--- a/src/Composer/ComposerPackageInterface.php
+++ b/src/Composer/ComposerPackageInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/Config.php b/src/Config.php
index 085812a5189d70df856413bffb18025ed9c80573..032e645241340994f94ca5753d53b3c8b94b54eb 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/FileLocator/ChainFileLocator.php b/src/FileLocator/ChainFileLocator.php
index 896751f657567cfac2796e08305676a895f62787..3a43bc48c35c976f8d496c151fc56d1bfafb1a4f 100644
--- a/src/FileLocator/ChainFileLocator.php
+++ b/src/FileLocator/ChainFileLocator.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/FileLocator/FileLocator.php b/src/FileLocator/FileLocator.php
index d33d599b15e04afcb40e3020ebc2c0b5188adab6..970c4fe70dade55358cba538c44e9c7e65f77b9f 100644
--- a/src/FileLocator/FileLocator.php
+++ b/src/FileLocator/FileLocator.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/FileLocator/FileLocatorInterface.php b/src/FileLocator/FileLocatorInterface.php
index cdf287a3349607c3f7653bb16d20fd27aa9cd59a..993df6efb5989595c3fb1daa8abd6ae87e091269 100644
--- a/src/FileLocator/FileLocatorInterface.php
+++ b/src/FileLocator/FileLocatorInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/Git/CachedGitRepository.php b/src/Git/CachedGitRepository.php
index 9587fd48890dc6e26ab7cd93f4f448048f884b98..52fc383f65ec5a6b44c1015556367a8f33f06cbc 100644
--- a/src/Git/CachedGitRepository.php
+++ b/src/Git/CachedGitRepository.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/Git/GitRepository.php b/src/Git/GitRepository.php
index e18ee75a1ed8bf25f318eaf6364867e5a0b085d5..50a4d0a4f21f0b573ccd49e0643157ecacd098b0 100644
--- a/src/Git/GitRepository.php
+++ b/src/Git/GitRepository.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/Git/GitRepositoryInterface.php b/src/Git/GitRepositoryInterface.php
index 79cccddb8b6cff335d897bc2d58c814a8e60934b..cba1f41343ac72e1b55f6446efcdde0a68a84a7f 100644
--- a/src/Git/GitRepositoryInterface.php
+++ b/src/Git/GitRepositoryInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/ChainTemplateProvider.php b/src/HeaderComment/ChainTemplateProvider.php
index 661dcb9a3a8a76cd0b094be8fd1346f48006475c..5ccba05789bd3ec0be4e0ac7d6312458e9f5b9c7 100644
--- a/src/HeaderComment/ChainTemplateProvider.php
+++ b/src/HeaderComment/ChainTemplateProvider.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/FormattedHeaderProvider.php b/src/HeaderComment/FormattedHeaderProvider.php
index c2fa0421a0c6ac0745dd92bc5fc7f5882f7194ec..f6a65a2d67801a6925f3f4550e4ea9541c27e104 100644
--- a/src/HeaderComment/FormattedHeaderProvider.php
+++ b/src/HeaderComment/FormattedHeaderProvider.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/HeaderProviderInterface.php b/src/HeaderComment/HeaderProviderInterface.php
index 21e00c34f333cd8260919c2c6c00c4d3c2a389b6..fff027c2e94604b2954b332ec20e75cf12852c09 100644
--- a/src/HeaderComment/HeaderProviderInterface.php
+++ b/src/HeaderComment/HeaderProviderInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/LicenseTemplateProvider.php b/src/HeaderComment/LicenseTemplateProvider.php
index 6ce59dedb18eecfef742d86c3941ca352866f95a..82d1135a3e9d216888bed36f6232d1fdbfed6b08 100644
--- a/src/HeaderComment/LicenseTemplateProvider.php
+++ b/src/HeaderComment/LicenseTemplateProvider.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/TemplateFormatter.php b/src/HeaderComment/TemplateFormatter.php
index ca9729a90f638cd3321d89f43451bbb3a7511e6b..fa3aebb5fca69dea22de1e8b5c8632b60a84f05e 100644
--- a/src/HeaderComment/TemplateFormatter.php
+++ b/src/HeaderComment/TemplateFormatter.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/TemplateFormatterInterface.php b/src/HeaderComment/TemplateFormatterInterface.php
index 6234e39a36769d193d8b0456395e4218731d66ce..80c8261ec82ebfecb36fa64bab4b8dbfa4578f76 100644
--- a/src/HeaderComment/TemplateFormatterInterface.php
+++ b/src/HeaderComment/TemplateFormatterInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/TemplateProviderInterface.php b/src/HeaderComment/TemplateProviderInterface.php
index 227ced140759a988789e5002251bdd6459a94a73..3421c515c186e23a131d706735f15181d40bab65 100644
--- a/src/HeaderComment/TemplateProviderInterface.php
+++ b/src/HeaderComment/TemplateProviderInterface.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/src/HeaderComment/UserDefinedTemplateProvider.php b/src/HeaderComment/UserDefinedTemplateProvider.php
index ccb24fb1e1c0e05cb5e0fc4c9ea4cf96ab74f090..096e73c8770606d5d7bfc27c27d1aba28f81234e 100644
--- a/src/HeaderComment/UserDefinedTemplateProvider.php
+++ b/src/HeaderComment/UserDefinedTemplateProvider.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/tests/FileLocator/FileLocatorTest.php b/tests/FileLocator/FileLocatorTest.php
index c401cda069a5e2d4a7f9190d6c2728bd9aed1f28..7e372cd3db86c19d5fd5d3572aff88a73ddda583 100644
--- a/tests/FileLocator/FileLocatorTest.php
+++ b/tests/FileLocator/FileLocatorTest.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
diff --git a/tests/HeaderComment/LicenseTemplateProviderTest.php b/tests/HeaderComment/LicenseTemplateProviderTest.php
index 0fdcb1fdf4d8cae4688d19c2fba534e5bade5da1..e695d19b6d641284003e165ba3963d76cfc64aa1 100644
--- a/tests/HeaderComment/LicenseTemplateProviderTest.php
+++ b/tests/HeaderComment/LicenseTemplateProviderTest.php
@@ -1,7 +1,7 @@
 <?php declare(strict_types=1);
 /*
  * irstea/php-cs-fixer-config - Jeux de règles pour php-cs-fixer.
- * Copyright (C) 2018-2019 IRSTEA
+ * Copyright (C) 2018-2020 IRSTEA
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.