diff --git a/src/Collector/MigrationsCollector.php b/src/Collector/MigrationsCollector.php
index bf93e75..8bf02a3 100644
--- a/src/Collector/MigrationsCollector.php
+++ b/src/Collector/MigrationsCollector.php
@@ -19,8 +19,8 @@
 class MigrationsCollector extends DataCollector
 {
     public function __construct(
-        private DependencyFactory $dependencyFactory,
-        private MigrationsFlattener $flattener,
+        private readonly DependencyFactory $dependencyFactory,
+        private readonly MigrationsFlattener $flattener,
     ) {
     }
 
diff --git a/src/Collector/MigrationsFlattener.php b/src/Collector/MigrationsFlattener.php
index bf4df28..cc97951 100644
--- a/src/Collector/MigrationsFlattener.php
+++ b/src/Collector/MigrationsFlattener.php
@@ -28,17 +28,15 @@ class MigrationsFlattener
      */
     public function flattenAvailableMigrations(AvailableMigrationsList $migrationsList): array
     {
-        return array_map(static function (AvailableMigration $migration) {
-            return [
-                'version' => (string) $migration->getVersion(),
-                'is_new' => true,
-                'is_unavailable' => false,
-                'description' => $migration->getMigration()->getDescription(),
-                'executed_at' =>  null,
-                'execution_time' =>  null,
-                'file' => (new ReflectionClass($migration->getMigration()))->getFileName(),
-            ];
-        }, $migrationsList->getItems());
+        return array_map(static fn (AvailableMigration $migration) => [
+            'version' => (string) $migration->getVersion(),
+            'is_new' => true,
+            'is_unavailable' => false,
+            'description' => $migration->getMigration()->getDescription(),
+            'executed_at' =>  null,
+            'execution_time' =>  null,
+            'file' => (new ReflectionClass($migration->getMigration()))->getFileName(),
+        ], $migrationsList->getItems());
     }
 
     /**
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index dd0c61b..af39f35 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -14,8 +14,8 @@
 use function count;
 use function in_array;
 use function is_string;
+use function str_starts_with;
 use function strlen;
-use function strpos;
 use function strtoupper;
 use function substr;
 
@@ -45,11 +45,10 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->useAttributeAsKey('service')
                     ->defaultValue([])
                     ->validate()
-                        ->ifTrue(static function (array $v): bool {
-                            return count(array_filter(array_keys($v), static function (string $doctrineService): bool {
-                                return strpos($doctrineService, 'Doctrine\Migrations\\') !== 0;
-                            })) !== 0;
-                        })
+                        ->ifTrue(static fn (array $v): bool => count(array_filter(
+                            array_keys($v),
+                            static fn (string $doctrineService): bool => ! str_starts_with($doctrineService, 'Doctrine\Migrations\\'),
+                        )) !== 0)
                         ->thenInvalid('Valid services for the DoctrineMigrationsBundle must be in the "Doctrine\Migrations" namespace.')
                     ->end()
                     ->prototype('scalar')->end()
@@ -60,11 +59,10 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->useAttributeAsKey('factory')
                     ->defaultValue([])
                     ->validate()
-                        ->ifTrue(static function (array $v): bool {
-                            return count(array_filter(array_keys($v), static function (string $doctrineService): bool {
-                                return strpos($doctrineService, 'Doctrine\Migrations\\') !== 0;
-                            })) !== 0;
-                        })
+                        ->ifTrue(static fn (array $v): bool => count(array_filter(
+                            array_keys($v),
+                            static fn (string $doctrineService): bool => ! str_starts_with($doctrineService, 'Doctrine\Migrations\\'),
+                        )) !== 0)
                         ->thenInvalid('Valid callables for the DoctrineMigrationsBundle must be in the "Doctrine\Migrations" namespace.')
                     ->end()
                     ->prototype('scalar')->end()
@@ -128,9 +126,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                     ->end()
                     ->validate()
                         ->ifString()
-                            ->then(static function ($v) {
-                                return constant('Doctrine\Migrations\Configuration\Configuration::VERSIONS_ORGANIZATION_' . strtoupper($v));
-                            })
+                        ->then(static fn (string $v): string => constant('Doctrine\Migrations\Configuration\Configuration::VERSIONS_ORGANIZATION_' . strtoupper($v)))
                     ->end()
                 ->end()
                 ->booleanNode('enable_profiler')
@@ -160,7 +156,7 @@ private function getOrganizeMigrationsModes(): array
         $namesArray  = [];
 
         foreach ($constsArray as $constant) {
-            if (strpos($constant, $constPrefix) !== 0) {
+            if (! str_starts_with($constant, $constPrefix)) {
                 continue;
             }
 
diff --git a/tests/Collector/MigrationsFlattenerTest.php b/tests/Collector/MigrationsFlattenerTest.php
index 915102e..80787a3 100644
--- a/tests/Collector/MigrationsFlattenerTest.php
+++ b/tests/Collector/MigrationsFlattenerTest.php
@@ -20,8 +20,7 @@
 
 class MigrationsFlattenerTest extends TestCase
 {
-    /** @var MigrationsFlattener */
-    private $flattener;
+    private MigrationsFlattener $flattener;
 
     protected function setUp(): void
     {
diff --git a/tests/DependencyInjection/DoctrineCommandsTest.php b/tests/DependencyInjection/DoctrineCommandsTest.php
index 3b32c0e..1a9dce8 100644
--- a/tests/DependencyInjection/DoctrineCommandsTest.php
+++ b/tests/DependencyInjection/DoctrineCommandsTest.php
@@ -70,8 +70,7 @@ public static function getCommands(): array
         ];
     }
 
-    /** @return KernelInterface&MockObject */
-    private function getKernel(ContainerBuilder $container): KernelInterface
+    private function getKernel(ContainerBuilder $container): KernelInterface&MockObject
     {
         $kernel = $this->createMock(KernelInterface::class);
 
diff --git a/tests/DependencyInjection/DoctrineMigrationsExtensionTest.php b/tests/DependencyInjection/DoctrineMigrationsExtensionTest.php
index 7b1aa4c..749a7cc 100644
--- a/tests/DependencyInjection/DoctrineMigrationsExtensionTest.php
+++ b/tests/DependencyInjection/DoctrineMigrationsExtensionTest.php
@@ -202,12 +202,9 @@ public function testServiceFactory(): void
         $container = $this->getContainer($config);
 
         $sorterFactory = new class ($mockComparator) {
-            /** @var Comparator */
-            private $comparator;
-
-            public function __construct(Comparator $comparator)
-            {
-                $this->comparator = $comparator;
+            public function __construct(
+                private readonly Comparator $comparator,
+            ) {
             }
 
             public function __invoke(DependencyFactory $di): Comparator