diff --git a/.github/workflows/test-application.yaml b/.github/workflows/test-application.yaml
index 462433a..f53f1f9 100644
--- a/.github/workflows/test-application.yaml
+++ b/.github/workflows/test-application.yaml
@@ -19,11 +19,8 @@ jobs:
             fail-fast: false
             matrix:
                 include:
-                    - php-version: '7.2'
+                    - php-version: '8.1'
                       dependencies: 'lowest'
-                    - php-version: '7.3'
-                    - php-version: '7.4'
-                    - php-version: '8.0'
                     - php-version: '8.1'
                     - php-version: '8.2'
                     - php-version: '8.3'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f443e3..5a56e35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 Changelog
 =========
 
+1.4.0
+-----
+
+* Allow installation with Symfony 7.
+* Test with PHP 8.2, 8.3
+* Drop support for PHP < 8.1
+
 1.3.1
 -----
 
diff --git a/README.md b/README.md
index fa44f76..afb37b0 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ use PHPCR\Migrations\VersionFinder;
 use PHPCR\Migrations\Migrator;
 
 $storage = new VersionStorage($phpcrSession);
-$finder = new VersionFinder(array('/path/to/migrations'));
+$finder = new VersionFinder(['/path/to/migrations']);
 
 $versions = $finder->getVersionCollection();
 $migrator = new Migrator($session, $versionCollection, $storage);
diff --git a/composer.json b/composer.json
index c315882..389734c 100644
--- a/composer.json
+++ b/composer.json
@@ -9,16 +9,15 @@
         }
     ],
     "require": {
-        "php": "^7.2|^8.0",
+        "php": "^8.1",
         "phpcr/phpcr": "^2.1",
-        "symfony/finder": "^4.4 || ^5.0 || ^6.0",
-        "symfony/console": "^4.4 || ^5.0 || ^6.0"
+        "symfony/finder": "^5.4 || ^6.0 || ^7.0",
+        "symfony/console": "^5.4 || ^6.0 || ^7.0"
     },
     "require-dev": {
-        "jackalope/jackalope-fs": "0.0.*",
+        "jackalope/jackalope-fs": "^0.0.4",
         "handcraftedinthealps/zendsearch": "^2.0",
-        "phpunit/phpunit": "^8.5 || ^9.4",
-        "phpspec/prophecy": "^1.19"
+        "phpunit/phpunit": "^9.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/tests/Functional/MigrationTest.php b/tests/Functional/MigrationTest.php
index 4e52fa8..3840d5e 100644
--- a/tests/Functional/MigrationTest.php
+++ b/tests/Functional/MigrationTest.php
@@ -25,11 +25,11 @@ class MigrationTest extends BaseTestCase
     public const VERSION2 = '201501011212';
     public const VERSION3 = '201501011215';
 
-    private $output;
-    private $filesystem;
-    private $migrationDistDir;
-    private $migrationDir;
-    private $storage;
+    private BufferedOutput $output;
+    private Filesystem $filesystem;
+    private string $migrationDistDir;
+    private string $migrationDir;
+    private VersionStorage $storage;
 
     public function setUp(): void
     {
@@ -49,7 +49,7 @@ public function setUp(): void
     /**
      * It should execute all the migrations and populate the versions table.
      */
-    public function testMigration()
+    public function testMigration(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -72,7 +72,7 @@ public function testMigration()
     /**
      * It should not run migrations that have already been executed.
      */
-    public function testMigrateAgain()
+    public function testMigrateAgain(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -88,7 +88,7 @@ public function testMigrateAgain()
     /**
      * It should run new migrations.
      */
-    public function testMigrateAdd()
+    public function testMigrateAdd(): void
     {
         $this->addVersion(self::VERSION1);
 
@@ -105,7 +105,7 @@ public function testMigrateAdd()
     /**
      * It should run migrations backwards.
      */
-    public function testMigrateDown()
+    public function testMigrateDown(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -136,7 +136,7 @@ public function testMigrateDown()
     /**
      * It should do nothing if target version is current version.
      */
-    public function testMigrateToCurrentVersionFromCurrent()
+    public function testMigrateToCurrentVersionFromCurrent(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -150,7 +150,7 @@ public function testMigrateToCurrentVersionFromCurrent()
     /**
      * It should add all migrations.
      */
-    public function testInitialize()
+    public function testInitialize(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -164,7 +164,7 @@ public function testInitialize()
     /**
      * It should throw an exception if trying to reiniitialize.
      */
-    public function testReinitialize()
+    public function testReinitialize(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -179,7 +179,7 @@ public function testReinitialize()
     /**
      * It should migrate to the next version.
      */
-    public function testMigrateNext()
+    public function testMigrateNext(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -196,7 +196,7 @@ public function testMigrateNext()
     /**
      * It should migrate to the previous version.
      */
-    public function testMigratePrevious()
+    public function testMigratePrevious(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -223,7 +223,7 @@ public function testMigratePrevious()
     /**
      * It should migrate to the top.
      */
-    public function testMigrateTop()
+    public function testMigrateTop(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -235,7 +235,7 @@ public function testMigrateTop()
     /**
      * It should migrate to the bottom.
      */
-    public function testMigrateBottom()
+    public function testMigrateBottom(): void
     {
         $this->addVersion(self::VERSION1);
         $this->addVersion(self::VERSION2);
@@ -245,7 +245,7 @@ public function testMigrateBottom()
         $this->assertCount(3, $migratedVersions);
     }
 
-    private function addVersion($version)
+    private function addVersion($version): void
     {
         $this->filesystem->copy(
             $this->migrationDistDir.'/Version'.$version.'.php',
@@ -253,7 +253,7 @@ private function addVersion($version)
         );
     }
 
-    private function getMigrator()
+    private function getMigrator(): Migrator
     {
         $this->storage = new VersionStorage($this->session);
         $finder = new VersionFinder([$this->migrationDir]);
diff --git a/tests/Unit/MigratorFactoryTest.php b/tests/Unit/MigratorFactoryTest.php
index 16727cb..db9f4b3 100644
--- a/tests/Unit/MigratorFactoryTest.php
+++ b/tests/Unit/MigratorFactoryTest.php
@@ -11,24 +11,28 @@
 
 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
 {
-    public function testFactory()
+    public function testFactory(): void
     {
-        $storage = $this->prophesize('PHPCR\Migrations\VersionStorage');
-        $finder = $this->prophesize('PHPCR\Migrations\VersionFinder');
-        $session = $this->prophesize('PHPCR\SessionInterface');
-        $finder->getCollection()->willReturn($this->prophesize('PHPCR\Migrations\VersionCollection')->reveal());
+        $storage = $this->createMock(VersionStorage::class);
+        $finder = $this->createMock(VersionFinder::class);
+        $finder->expects($this->once())
+            ->method('getCollection')
+            ->willReturn($this->createMock(VersionCollection::class))
+        ;
+        $session = $this->createMock(SessionInterface::class);
 
-        $factory = new MigratorFactory(
-            $storage->reveal(),
-            $finder->reveal(),
-            $session->reveal()
-        );
+        $factory = new MigratorFactory($storage, $finder, $session);
         $migrator = $factory->getMigrator();
-        $this->assertInstanceOf('PHPCR\Migrations\Migrator', $migrator);
+        $this->assertInstanceOf(Migrator::class, $migrator);
     }
 }
diff --git a/tests/Unit/MigratorUtilTest.php b/tests/Unit/MigratorUtilTest.php
index 8415831..b31ecdb 100644
--- a/tests/Unit/MigratorUtilTest.php
+++ b/tests/Unit/MigratorUtilTest.php
@@ -13,15 +13,16 @@
 
 use PHPCR\Migrations\MigratorUtil;
 use PHPUnit\Framework\TestCase;
+use Sulu\Bundle\ContentBundle\Version201511240843;
 
 class MigratorUtilTest extends TestCase
 {
     /**
      * It should return the classname of a file.
      */
-    public function testGetClassName()
+    public function testGetClassName(): void
     {
         $className = MigratorUtil::getClassNameFromFile(__DIR__.'/migrations/Version201511240843.php');
-        $this->assertEquals('\Sulu\Bundle\ContentBundle\Version201511240843', $className);
+        $this->assertEquals('\\'.Version201511240843::class, $className);
     }
 }
diff --git a/tests/Unit/VersionCollectionTest.php b/tests/Unit/VersionCollectionTest.php
index e3a0214..dfa8f73 100644
--- a/tests/Unit/VersionCollectionTest.php
+++ b/tests/Unit/VersionCollectionTest.php
@@ -12,6 +12,7 @@
 namespace PHPCR\Migrations\Tests\Unit;
 
 use PHPCR\Migrations\VersionCollection;
+use PHPCR\Migrations\VersionInterface;
 use PHPUnit\Framework\TestCase;
 
 class VersionCollectionTest extends TestCase
@@ -22,19 +23,19 @@ class VersionCollectionTest extends TestCase
 
     public function setUp(): void
     {
-        $this->version1 = $this->prophesize('PHPCR\Migrations\VersionInterface');
-        $this->version2 = $this->prophesize('PHPCR\Migrations\VersionInterface');
-        $this->version3 = $this->prophesize('PHPCR\Migrations\VersionInterface');
+        $this->version1 = $this->createMock(VersionInterface::class);
+        $this->version2 = $this->createMock(VersionInterface::class);
+        $this->version3 = $this->createMock(VersionInterface::class);
     }
 
     /**
      * It knows if it contains a version.
      */
-    public function testHas()
+    public function testHas(): void
     {
         $collection = $this->createCollection([
-            self::VERSION1 => $this->version1->reveal(),
-            self::VERSION3 => $this->version3->reveal(),
+            self::VERSION1 => $this->version1,
+            self::VERSION3 => $this->version3,
         ]);
         $this->assertTrue($collection->has(self::VERSION1));
         $this->assertTrue($collection->has(self::VERSION3));
@@ -44,12 +45,12 @@ public function testHas()
     /**
      * It returns the versions required to migrate from up from A to B.
      */
-    public function testFromAToBUp()
+    public function testFromAToBUp(): void
     {
         $collection = $this->createCollection([
-            self::VERSION1 => $this->version1->reveal(),
-            self::VERSION2 => $this->version2->reveal(),
-            self::VERSION3 => $this->version3->reveal(),
+            self::VERSION1 => $this->version1,
+            self::VERSION2 => $this->version2,
+            self::VERSION3 => $this->version3,
         ]);
 
         $versions = $collection->getVersions(self::VERSION1, self::VERSION3);
@@ -62,12 +63,12 @@ public function testFromAToBUp()
     /**
      * It returns the versions required to migrate down from A to B.
      */
-    public function testDownFromAToBUp()
+    public function testDownFromAToBUp(): void
     {
         $collection = $this->createCollection([
-            self::VERSION1 => $this->version1->reveal(),
-            self::VERSION2 => $this->version2->reveal(),
-            self::VERSION3 => $this->version3->reveal(),
+            self::VERSION1 => $this->version1,
+            self::VERSION2 => $this->version2,
+            self::VERSION3 => $this->version3,
         ]);
 
         $versions = $collection->getVersions(self::VERSION3, self::VERSION1);
@@ -77,7 +78,7 @@ public function testDownFromAToBUp()
         ], array_map('strval', array_keys($versions)));
     }
 
-    private function createCollection($versions)
+    private function createCollection(array $versions): VersionCollection
     {
         return new VersionCollection($versions);
     }
diff --git a/tests/Unit/VersionFinderTest.php b/tests/Unit/VersionFinderTest.php
index 87807a8..cb67449 100644
--- a/tests/Unit/VersionFinderTest.php
+++ b/tests/Unit/VersionFinderTest.php
@@ -11,15 +11,13 @@
 
 namespace PHPCR\Migrations\Tests\Unit;
 
+use PHPCR\Migrations\VersionCollection;
 use PHPCR\Migrations\VersionFinder;
 use PHPUnit\Framework\TestCase;
 
 class VersionFinderTest extends TestCase
 {
-    /**
-     * @var VersionFinder
-     */
-    private $finder;
+    private VersionFinder $finder;
 
     public function setUp(): void
     {
@@ -33,10 +31,10 @@ public function setUp(): void
      *
      * @runInSeparateProcess
      */
-    public function testGetCollection()
+    public function testGetCollection(): void
     {
         $collection = $this->finder->getCollection();
-        $this->assertInstanceOf('PHPCR\Migrations\VersionCollection', $collection);
+        $this->assertInstanceOf(VersionCollection::class, $collection);
         $versions = $collection->getAllVersions();
         $this->assertCount(3, $versions);
     }
@@ -44,10 +42,10 @@ public function testGetCollection()
     /**
      * It should do nothing if no migrations paths are given.
      */
-    public function testNoMigrationPaths()
+    public function testNoMigrationPaths(): void
     {
         $this->expectException(\RuntimeException::class);
         $this->expectExceptionMessage('No paths were provided');
-        $versionFinder = new VersionFinder([]);
+        new VersionFinder([]);
     }
 }