diff --git a/.github/workflows/static.yaml b/.github/workflows/static.yaml
new file mode 100644
index 0000000..3a824bd
--- /dev/null
+++ b/.github/workflows/static.yaml
@@ -0,0 +1,33 @@
+name: Static analysis
+on:
+  push:
+    branches:
+      - '[0-9]+.x'
+      - '[0-9]+.[0-9]+'
+      - '[0-9]+.[0-9]+.x'
+  pull_request:
+
+jobs:
+  phpstan:
+    name: PHPStan
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: PHPStan
+        uses: docker://oskarstark/phpstan-ga
+        env:
+          REQUIRE_DEV: true
+        with:
+          args: analyze --no-progress
+
+  php-cs-fixer:
+    name: PHP-CS-Fixer
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: PHP-CS-Fixer
+        uses: docker://oskarstark/php-cs-fixer-ga
+        with:
+          args: --dry-run
diff --git a/.github/workflows/test-application.yaml b/.github/workflows/test-application.yaml
index f7361f8..462433a 100644
--- a/.github/workflows/test-application.yaml
+++ b/.github/workflows/test-application.yaml
@@ -4,12 +4,14 @@ on:
     pull_request:
     push:
         branches:
-            - 'master'
+        - '[0-9]+.x'
+        - '[0-9]+.[0-9]+'
+        - '[0-9]+.[0-9]+.x'
 
 jobs:
     test:
         name: 'PHP ${{ matrix.php-version }} ${{ matrix.dependencies }}'
-        runs-on: ubuntu-20.04
+        runs-on: ubuntu-latest
         env:
             SYMFONY_DEPRECATIONS_HELPER: weak
 
@@ -23,10 +25,12 @@ jobs:
                     - php-version: '7.4'
                     - php-version: '8.0'
                     - php-version: '8.1'
+                    - php-version: '8.2'
+                    - php-version: '8.3'
 
         steps:
             - name: Checkout project
-              uses: actions/checkout@v2
+              uses: actions/checkout@v4
 
             - name: Install and configure PHP
               uses: shivammathur/setup-php@v2
@@ -35,7 +39,7 @@ jobs:
                   tools: 'composer:v2'
 
             - name: Install dependencies with Composer
-              uses: ramsey/composer-install@v1
+              uses: ramsey/composer-install@v3
               with:
                   dependency-versions: ${{ matrix.dependencies }}
                   composer-options: --prefer-dist
diff --git a/.gitignore b/.gitignore
index 2f66930..cc40462 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
-composer.lock
-vendor
-tests/data
-tests/migrations
-.phpunit.result.cache
+/.php-cs-fixer.cache
+/.phpunit.result.cache
+/composer.lock
+/phpunit.xml
+/tests/data
+/tests/migrations
+/vendor
diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
new file mode 100644
index 0000000..8b672e1
--- /dev/null
+++ b/.php-cs-fixer.dist.php
@@ -0,0 +1,12 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->exclude('vendor')
+    ->in(__DIR__);
+$config = new PhpCsFixer\Config();
+
+return $config->setFinder($finder)
+    ->setRules([
+         '@Symfony' => true,
+         'array_syntax' => ['syntax' => 'short'],
+    ]);
diff --git a/.php_cs b/.php_cs
deleted file mode 100644
index 816b744..0000000
--- a/.php_cs
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-
-$header = <<<EOF
-This file is part of the PHPCR Migrations package
-
-(c) Daniel Leech <daniel@dantleech.com>
-
-For the full copyright and license information, please view the LICENSE
-file that was distributed with this source code.
-EOF;
-
-Symfony\CS\Fixer\Contrib\HeaderCommentFixer::setHeader($header);
-
-return Symfony\CS\Config\Config::create()
-    ->fixers(array(
-        'header_comment',
-        'symfony',
-        'concat_with_spaces',
-        'ordered_use',
-        '-concat_without_spaces',
-        '-phpdoc_indent',
-        '-phpdoc_params',
-    ))
-    ->finder(
-        Symfony\CS\Finder\DefaultFinder::create()
-            ->exclude('vendor')
-            ->in(__DIR__)
-    )
-; 
diff --git a/README.md b/README.md
index 4f264a4..fa44f76 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@ PHPCR Migrations
 ================
 
 [![Build
-Status](https://travis-ci.org/phpcr/phpcr-migrations.svg?branch=master)](https://travis-ci.org/phpcr/phpcr-migrations)
+Status](https://github.com/phpcr/phpcr-migrations/actions/workflows/test-application.yaml/badge.svg)](https://github.com/phpcr/phpcr-migrations/actions/workflows/test-application.yaml)
 
 Migrations library for PHPCR influenced by [Doctrine
 migrations](https://github.com/doctrine/migrations).
diff --git a/composer.json b/composer.json
index 7a3f984..c315882 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,8 @@
     "require-dev": {
         "jackalope/jackalope-fs": "0.0.*",
         "handcraftedinthealps/zendsearch": "^2.0",
-        "phpunit/phpunit": "^8.5 || ^9.4"
+        "phpunit/phpunit": "^8.5 || ^9.4",
+        "phpspec/prophecy": "^1.19"
     },
     "autoload": {
         "psr-4": {
@@ -28,8 +29,5 @@
         "psr-4": {
             "PHPCR\\Migrations\\Tests\\": "tests"
         }
-    },
-    "extra": {
-        "branch-alias": {"dev-master": "1.x-dev" }
     }
 }
diff --git a/lib/Migrator.php b/lib/Migrator.php
index 3452585..538d108 100644
--- a/lib/Migrator.php
+++ b/lib/Migrator.php
@@ -20,9 +20,9 @@ class Migrator
     private $session;
     private $versionCollection;
     private $versionStorage;
-    private $actions = array(
+    private $actions = [
         'up', 'down', 'top', 'bottom',
-    );
+    ];
 
     public function __construct(
         SessionInterface $session,
@@ -57,15 +57,14 @@ public function initialize()
      * If $to is 0 then all migrations will be reverted.
      * If $to is null then all migrations will be executed.
      *
-     * @param string|null $to Version to run until
-     * @param OutputInterface $output
+     * @param string|int|bool|null $to Version to run until
      *
      * @return VersionInterface[] Executed migrations
      */
     public function migrate($to, OutputInterface $output)
     {
         if (false === $to) {
-            return array();
+            return [];
         }
 
         $from = $this->versionStorage->getCurrentVersion();
@@ -76,17 +75,17 @@ public function migrate($to, OutputInterface $output)
         $versionsToExecute = $this->versionCollection->getVersions($from, $to, $direction);
 
         if (!$versionsToExecute) {
-            return array();
+            return [];
         }
 
         $position = 0;
-        $output->writeln(sprintf('<comment>%s</comment> %d version(s):', ($direction == 'up' ? 'Upgrading' : 'Reverting'), count($versionsToExecute)));
+        $output->writeln(sprintf('<comment>%s</comment> %d version(s):', 'up' == $direction ? 'Upgrading' : 'Reverting', count($versionsToExecute)));
         foreach ($versionsToExecute as $timestamp => $version) {
-            $position++;
-            $output->writeln(sprintf(' %s [<info>%d/%d</info>]: %s', $direction == 'up' ? '+' : '-', $position, count($versionsToExecute), $timestamp));
+            ++$position;
+            $output->writeln(sprintf(' %s [<info>%d/%d</info>]: %s', 'up' == $direction ? '+' : '-', $position, count($versionsToExecute), $timestamp));
             $version->$direction($this->session);
 
-            if ($direction === 'down') {
+            if ('down' === $direction) {
                 $this->versionStorage->remove($timestamp);
             } else {
                 $this->versionStorage->add($timestamp);
@@ -117,34 +116,28 @@ private function resolveTo($to, $from)
             $to = strtolower($to);
         }
 
-        if ($to === 'down') {
+        if ('down' === $to) {
             $to = $this->versionCollection->getPreviousVersion($from);
         }
 
-        if ($to === 'up') {
+        if ('up' === $to) {
             $to = $this->versionCollection->getNextVersion($from);
         }
 
-        if ($to === 'bottom') {
+        if ('bottom' === $to) {
             $to = 0;
         }
 
-        if ($to === 'top' || null === $to) {
+        if ('top' === $to || null === $to) {
             $to = $this->versionCollection->getLatestVersion();
         }
 
         if (0 !== $to && false === strtotime($to)) {
-            throw new MigratorException(sprintf(
-                'Unknown migration action "%s". Known actions: "%s"',
-                $to,
-                implode('", "', $this->actions)
-            ));
+            throw new MigratorException(sprintf('Unknown migration action "%s". Known actions: "%s"', $to, implode('", "', $this->actions)));
         }
 
         if (0 !== $to && !$this->versionCollection->has($to)) {
-            throw new MigratorException(sprintf(
-                'Unknown version "%s"', $to
-            ));
+            throw new MigratorException(sprintf('Unknown version "%s"', $to));
         }
 
         return $to;
diff --git a/lib/MigratorUtil.php b/lib/MigratorUtil.php
index 8e5abae..69e34be 100644
--- a/lib/MigratorUtil.php
+++ b/lib/MigratorUtil.php
@@ -24,7 +24,7 @@ class MigratorUtil
      */
     public static function getClassNameFromFile($file)
     {
-        $fp = fopen($file, 'r');
+        $fp = fopen($file, 'rb');
 
         $class = $namespace = $buffer = '';
         $i = 0;
@@ -35,40 +35,41 @@ public static function getClassNameFromFile($file)
             }
 
             // Read entire lines to prevent keyword truncation
-            for ($line = 0; $line <= 20; $line++) {
+            for ($line = 0; $line <= 20; ++$line) {
                 $buffer .= fgets($fp);
             }
             $tokens = @token_get_all($buffer);
+            $tokensCount = count($tokens);
 
-            if (strpos($buffer, '{') === false) {
+            if (false === strpos($buffer, '{')) {
                 continue;
             }
 
-            for (;$i < count($tokens);$i++) {
-                if ($tokens[$i][0] === T_NAMESPACE) {
-                    for ($j = $i + 1;$j < count($tokens); $j++) {
-                        if (\defined('T_NAME_QUALIFIED') && $tokens[$j][0] === T_NAME_QUALIFIED || $tokens[$j][0] === T_STRING) {
-                            $namespace .= '\\' . $tokens[$j][1];
-                        } elseif ($tokens[$j] === '{' || $tokens[$j] === ';') {
+            for (; $i < $tokensCount; ++$i) {
+                if (T_NAMESPACE === $tokens[$i][0]) {
+                    for ($j = $i + 1; $j < $tokensCount; ++$j) {
+                        if (T_STRING === $tokens[$j][0] || (\defined('T_NAME_QUALIFIED') && T_NAME_QUALIFIED === $tokens[$j][0])) {
+                            $namespace .= '\\'.$tokens[$j][1];
+                        } elseif ('{' === $tokens[$j] || ';' === $tokens[$j]) {
                             break;
                         }
                     }
                 }
 
-                if ($tokens[$i][0] === T_CLASS) {
-                    for ($j = $i + 1;$j < count($tokens);$j++) {
-                        if ($tokens[$j] === '{') {
+                if (T_CLASS === $tokens[$i][0]) {
+                    for ($j = $i + 1; $j < $tokensCount; ++$j) {
+                        if ('{' === $tokens[$j]) {
                             $class = $tokens[$i + 2][1];
                         }
                     }
                 }
             }
-        };
+        }
 
         if (!$class) {
-            return;
+            throw new \RuntimeException('Could not determine class for migration');
         }
 
-        return $namespace . '\\' . $class;
+        return $namespace.'\\'.$class;
     }
 }
diff --git a/lib/VersionCollection.php b/lib/VersionCollection.php
index 82a6dd6..ad55c74 100644
--- a/lib/VersionCollection.php
+++ b/lib/VersionCollection.php
@@ -34,25 +34,25 @@ public function getAllVersions()
     public function getVersions($from, $to)
     {
         $direction = $from > $to ? 'down' : 'up';
-        $result = array();
+        $result = [];
         $versions = $this->versions;
 
         if ($from == $to) {
-            return array();
+            return [];
         }
 
-        if ($direction === 'up') {
+        if ('up' === $direction) {
             ksort($versions, SORT_STRING);
         } else {
             krsort($versions, SORT_STRING);
         }
 
-        $found = $from === null ? true : false;
+        $found = null === $from ? true : false;
         foreach ($versions as $timestamp => $version) {
             if ($timestamp == $from) {
                 $found = true;
 
-                if ($direction == 'down') {
+                if ('down' == $direction) {
                     $result[$timestamp] = $version;
                 }
 
@@ -64,7 +64,7 @@ public function getVersions($from, $to)
             }
 
             if ($timestamp == $to) {
-                if ($direction == 'up') {
+                if ('up' == $direction) {
                     $result[$timestamp] = $version;
                 }
                 break;
@@ -86,13 +86,13 @@ public function getLatestVersion()
     /**
      * Return the version after the given version.
      *
-     * @param string $from
+     * @param string|null $from
      */
     public function getNextVersion($from)
     {
         $found = false;
         foreach (array_keys($this->versions) as $timestamp) {
-            if ($from === null) {
+            if (null === $from) {
                 return $timestamp;
             }
 
@@ -105,8 +105,6 @@ public function getNextVersion($from)
                 return $timestamp;
             }
         }
-
-        return;
     }
 
     /**
@@ -126,9 +124,4 @@ public function getPreviousVersion($from)
 
         return 0;
     }
-
-    private function normalizeTs($ts)
-    {
-        return $ts ? $ts : null;
-    }
 }
diff --git a/lib/VersionFinder.php b/lib/VersionFinder.php
index c0dd048..36d7d83 100644
--- a/lib/VersionFinder.php
+++ b/lib/VersionFinder.php
@@ -22,9 +22,7 @@ class VersionFinder
     public function __construct(array $paths)
     {
         if (empty($paths)) {
-            throw new \RuntimeException(
-                'No paths were provided to the version finder.'
-            );
+            throw new \RuntimeException('No paths were provided to the version finder.');
         }
         $this->paths = $paths;
     }
@@ -35,7 +33,7 @@ public function getCollection()
             return $this->collection;
         }
 
-        $versions = array();
+        $versions = [];
         $finder = new Finder();
         $finder->name('/Version[0-9]{12}.php/');
         $finder->files();
@@ -52,10 +50,7 @@ public function getCollection()
             $version = new $classFqn();
 
             if (!$version instanceof VersionInterface) {
-                throw new MigratorException(sprintf(
-                    'Version class "%s" must implement VersionInterface',
-                    $className
-                ));
+                throw new MigratorException(sprintf('Version class "%s" must implement VersionInterface', $className));
             }
 
             $versionTimestamp = substr($versionFile->getBaseName(), 7, 12);
diff --git a/lib/VersionInterface.php b/lib/VersionInterface.php
index 1cd9fb1..33ad011 100644
--- a/lib/VersionInterface.php
+++ b/lib/VersionInterface.php
@@ -28,15 +28,11 @@ interface VersionInterface
 {
     /**
      * Migrate the repository up.
-     *
-     * @param SessionInterface $session
      */
     public function up(SessionInterface $session);
 
     /**
      * Migrate the system down.
-     *
-     * @param SessionInterface $session
      */
     public function down(SessionInterface $session);
 }
diff --git a/lib/VersionStorage.php b/lib/VersionStorage.php
index 399fbe5..4cb98af 100644
--- a/lib/VersionStorage.php
+++ b/lib/VersionStorage.php
@@ -11,6 +11,7 @@
 
 namespace PHPCR\Migrations;
 
+use PHPCR\NodeInterface;
 use PHPCR\SessionInterface;
 
 class VersionStorage
@@ -18,6 +19,10 @@ class VersionStorage
     private $session;
     private $storageNodeName;
     private $initialized = false;
+    /**
+     * @var NodeInterface
+     */
+    private $storageNode;
 
     public function __construct(SessionInterface $session, $storageNodeName = 'phpcrmig:versions')
     {
@@ -31,8 +36,8 @@ public function init()
             return;
         }
 
-        $this->workspace = $this->session->getWorkspace();
-        $nodeTypeManager = $this->workspace->getNodeTypeManager();
+        $workspace = $this->session->getWorkspace();
+        $nodeTypeManager = $workspace->getNodeTypeManager();
 
         if (!$nodeTypeManager->hasNodeType('phpcrmig:version')) {
             $nodeTypeManager->registerNodeTypesCnd(<<<EOT
@@ -42,18 +47,15 @@ public function init()
 [phpcrmig:versions] > nt:base
 +* (phpcrmig:version)
 EOT
-            , true);
+                , true);
         }
 
         $rootNode = $this->session->getRootNode();
 
-        if ($rootNode->hasNode($this->storageNodeName)) {
-            $storageNode = $rootNode->getNode($this->storageNodeName);
-        } else {
-            $storageNode = $rootNode->addNode($this->storageNodeName, 'phpcrmig:versions');
-        }
-
-        $this->storageNode = $storageNode;
+        $this->storageNode = ($rootNode->hasNode($this->storageNodeName))
+            ? $rootNode->getNode($this->storageNodeName)
+            : $rootNode->addNode($this->storageNodeName, 'phpcrmig:versions')
+        ;
     }
 
     public function getPersistedVersions()
@@ -61,13 +63,13 @@ public function getPersistedVersions()
         $this->init();
 
         $versionNodes = $this->storageNode->getNodes();
-        $versions = array();
+        $versions = [];
 
         foreach ($versionNodes as $versionNode) {
-            $versions[$versionNode->getName()] = array(
+            $versions[$versionNode->getName()] = [
                 'name' => $versionNode->getName(),
                 'executed' => $versionNode->getPropertyValue('jcr:created'),
-            );
+            ];
         }
 
         return $versions;
@@ -75,7 +77,7 @@ public function getPersistedVersions()
 
     public function hasVersioningNode()
     {
-        return $this->session->nodeExists('/' . $this->storageNodeName);
+        return $this->session->nodeExists('/'.$this->storageNodeName);
     }
 
     public function getCurrentVersion()
@@ -85,7 +87,7 @@ public function getCurrentVersion()
         $versions = (array) $this->storageNode->getNodeNames();
 
         if (!$versions) {
-            return;
+            return null;
         }
 
         asort($versions);
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..1be1e0e
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,5 @@
+parameters:
+    level: 5
+    reportUnmatchedIgnoredErrors: false
+    paths:
+        - lib/
diff --git a/tests/BaseTestCase.php b/tests/BaseTestCase.php
index aa8b91d..0f55afc 100644
--- a/tests/BaseTestCase.php
+++ b/tests/BaseTestCase.php
@@ -22,14 +22,14 @@ class BaseTestCase extends TestCase
 
     public function initPhpcr()
     {
-        $path = __DIR__ . '/data';
+        $path = __DIR__.'/data';
         $sfFs = new Filesystem();
         $sfFs->remove($path);
         $factory = new RepositoryFactoryFilesystem();
-        $repository = $factory->getRepository(array(
+        $repository = $factory->getRepository([
             'path' => $path,
             'search.enabled' => false,
-        ));
+        ]);
         $credentials = new SimpleCredentials('admin', 'admin');
         $this->session = $repository->login($credentials);
     }
diff --git a/tests/Functional/MigrationTest.php b/tests/Functional/MigrationTest.php
index 7fdcdcb..4e52fa8 100644
--- a/tests/Functional/MigrationTest.php
+++ b/tests/Functional/MigrationTest.php
@@ -21,9 +21,9 @@
 
 class MigrationTest extends BaseTestCase
 {
-    const VERSION1 = '201501011200';
-    const VERSION2 = '201501011212';
-    const VERSION3 = '201501011215';
+    public const VERSION1 = '201501011200';
+    public const VERSION2 = '201501011212';
+    public const VERSION3 = '201501011215';
 
     private $output;
     private $filesystem;
@@ -34,8 +34,8 @@ class MigrationTest extends BaseTestCase
     public function setUp(): void
     {
         $this->initPhpcr();
-        $this->migrationDir = __DIR__ . '/../migrations';
-        $this->migrationDistDir = __DIR__ . '/../migrations.dist';
+        $this->migrationDir = __DIR__.'/../migrations';
+        $this->migrationDistDir = __DIR__.'/../migrations.dist';
         $this->filesystem = new Filesystem();
 
         if (file_exists($this->migrationDir)) {
@@ -248,15 +248,15 @@ public function testMigrateBottom()
     private function addVersion($version)
     {
         $this->filesystem->copy(
-            $this->migrationDistDir . '/Version' . $version . '.php',
-            $this->migrationDir . '/Version' . $version . '.php'
+            $this->migrationDistDir.'/Version'.$version.'.php',
+            $this->migrationDir.'/Version'.$version.'.php'
         );
     }
 
     private function getMigrator()
     {
         $this->storage = new VersionStorage($this->session);
-        $finder = new VersionFinder(array($this->migrationDir));
+        $finder = new VersionFinder([$this->migrationDir]);
         $versions = $finder->getCollection();
 
         return new Migrator($this->session, $versions, $this->storage);
diff --git a/tests/Unit/MigratorFactoryTest.php b/tests/Unit/MigratorFactoryTest.php
index 1c8c38f..16727cb 100644
--- a/tests/Unit/MigratorFactoryTest.php
+++ b/tests/Unit/MigratorFactoryTest.php
@@ -11,12 +11,7 @@
 
 namespace PHPCR\Migrations\Tests\Unit;
 
-use PHPCR\Migrations\Migrator;
 use PHPCR\Migrations\MigratorFactory;
-use PHPCR\Migrations\VersionCollection;
-use PHPCR\Migrations\VersionFinder;
-use PHPCR\Migrations\VersionStorage;
-use PHPCR\SessionInterface;
 use PHPUnit\Framework\TestCase;
 
 class MigratorFactoryTest extends TestCase
diff --git a/tests/Unit/MigratorUtilTest.php b/tests/Unit/MigratorUtilTest.php
index d7e5b90..8415831 100644
--- a/tests/Unit/MigratorUtilTest.php
+++ b/tests/Unit/MigratorUtilTest.php
@@ -21,7 +21,7 @@ class MigratorUtilTest extends TestCase
      */
     public function testGetClassName()
     {
-        $className = MigratorUtil::getClassNameFromFile(__DIR__ . '/migrations/Version201511240843.php');
+        $className = MigratorUtil::getClassNameFromFile(__DIR__.'/migrations/Version201511240843.php');
         $this->assertEquals('\Sulu\Bundle\ContentBundle\Version201511240843', $className);
     }
 }
diff --git a/tests/Unit/VersionCollectionTest.php b/tests/Unit/VersionCollectionTest.php
index 8fb0bf7..e3a0214 100644
--- a/tests/Unit/VersionCollectionTest.php
+++ b/tests/Unit/VersionCollectionTest.php
@@ -12,14 +12,13 @@
 namespace PHPCR\Migrations\Tests\Unit;
 
 use PHPCR\Migrations\VersionCollection;
-use PHPCR\Migrations\VersionInterface;
 use PHPUnit\Framework\TestCase;
 
 class VersionCollectionTest extends TestCase
 {
-    const VERSION1 = '201501010000';
-    const VERSION2 = '201501020000';
-    const VERSION3 = '201501030000';
+    public const VERSION1 = '201501010000';
+    public const VERSION2 = '201501020000';
+    public const VERSION3 = '201501030000';
 
     public function setUp(): void
     {
@@ -33,10 +32,10 @@ public function setUp(): void
      */
     public function testHas()
     {
-        $collection = $this->createCollection(array(
+        $collection = $this->createCollection([
             self::VERSION1 => $this->version1->reveal(),
             self::VERSION3 => $this->version3->reveal(),
-        ));
+        ]);
         $this->assertTrue($collection->has(self::VERSION1));
         $this->assertTrue($collection->has(self::VERSION3));
         $this->assertFalse($collection->has(self::VERSION2));
@@ -47,17 +46,17 @@ public function testHas()
      */
     public function testFromAToBUp()
     {
-        $collection = $this->createCollection(array(
+        $collection = $this->createCollection([
             self::VERSION1 => $this->version1->reveal(),
             self::VERSION2 => $this->version2->reveal(),
             self::VERSION3 => $this->version3->reveal(),
-        ));
+        ]);
 
         $versions = $collection->getVersions(self::VERSION1, self::VERSION3);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             self::VERSION2, self::VERSION3,
-        ), array_map('strval', array_keys($versions)));
+        ], array_map('strval', array_keys($versions)));
     }
 
     /**
@@ -65,17 +64,17 @@ public function testFromAToBUp()
      */
     public function testDownFromAToBUp()
     {
-        $collection = $this->createCollection(array(
+        $collection = $this->createCollection([
             self::VERSION1 => $this->version1->reveal(),
             self::VERSION2 => $this->version2->reveal(),
             self::VERSION3 => $this->version3->reveal(),
-        ));
+        ]);
 
         $versions = $collection->getVersions(self::VERSION3, self::VERSION1);
 
-        $this->assertEquals(array(
+        $this->assertEquals([
             self::VERSION3, self::VERSION2,
-        ), array_map('strval', array_keys($versions)));
+        ], array_map('strval', array_keys($versions)));
     }
 
     private function createCollection($versions)
diff --git a/tests/Unit/VersionFinderTest.php b/tests/Unit/VersionFinderTest.php
index b526d42..87807a8 100644
--- a/tests/Unit/VersionFinderTest.php
+++ b/tests/Unit/VersionFinderTest.php
@@ -11,7 +11,6 @@
 
 namespace PHPCR\Migrations\Tests\Unit;
 
-use PHPCR\Migrations\VersionCollection;
 use PHPCR\Migrations\VersionFinder;
 use PHPUnit\Framework\TestCase;
 
@@ -24,9 +23,9 @@ class VersionFinderTest extends TestCase
 
     public function setUp(): void
     {
-        $this->finder = new VersionFinder(array(
-            __DIR__ . '/../migrations',
-        ));
+        $this->finder = new VersionFinder([
+            __DIR__.'/../migrations',
+        ]);
     }
 
     /**
@@ -49,6 +48,6 @@ public function testNoMigrationPaths()
     {
         $this->expectException(\RuntimeException::class);
         $this->expectExceptionMessage('No paths were provided');
-        $versionFinder = new VersionFinder(array());
+        $versionFinder = new VersionFinder([]);
     }
 }
diff --git a/tests/Unit/migrations/Version201511240843.php b/tests/Unit/migrations/Version201511240843.php
index ff1db62..2bd429e 100644
--- a/tests/Unit/migrations/Version201511240843.php
+++ b/tests/Unit/migrations/Version201511240843.php
@@ -12,21 +12,10 @@
 namespace Sulu\Bundle\ContentBundle;
 
 use PHPCR\Migrations\VersionInterface;
-use PHPCR\NodeInterface;
-use PHPCR\SessionInterface;
-use Bala\Bundle\ContentBundle\Blog\BasePageBlog;
-use Bala\Bundle\BlogManagerBundle\Bridge\BlogInspector;
-use Bala\Bundle\BlogManagerBundle\Bridge\PropertyEncoder;
-use Bala\Component\Content\Metadata\BlockMetadata;
-use Bala\Component\Content\Metadata\Factory\StructureMetadataFactoryInterface;
-use Bala\Component\Content\Metadata\PropertyMetadata;
-use Bala\Component\Content\Metadata\StructureMetadata;
-use Bala\Component\BlogManager\BlogManagerInterface;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
- * Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore
+ * Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore.
  *
  * Created: 2015-12-10 10:04
  */