diff --git a/src/Block/AuditBlockService.php b/src/Block/AuditBlockService.php
index 4b190cb8e..83602f8d3 100644
--- a/src/Block/AuditBlockService.php
+++ b/src/Block/AuditBlockService.php
@@ -27,7 +27,7 @@ final class AuditBlockService extends AbstractBlockService
 {
     public function __construct(
         Environment $twig,
-        private AuditReader $auditReader,
+        private readonly AuditReader $auditReader,
     ) {
         parent::__construct($twig);
     }
diff --git a/src/Builder/DatagridBuilder.php b/src/Builder/DatagridBuilder.php
index 0e69657b6..eba6f6389 100644
--- a/src/Builder/DatagridBuilder.php
+++ b/src/Builder/DatagridBuilder.php
@@ -41,10 +41,10 @@
 final class DatagridBuilder implements DatagridBuilderInterface
 {
     public function __construct(
-        private FormFactoryInterface $formFactory,
-        private FilterFactoryInterface $filterFactory,
-        private TypeGuesserInterface $guesser,
-        private bool $csrfTokenEnabled = true,
+        private readonly FormFactoryInterface $formFactory,
+        private readonly FilterFactoryInterface $filterFactory,
+        private readonly TypeGuesserInterface $guesser,
+        private readonly bool $csrfTokenEnabled = true,
     ) {
     }
 
diff --git a/src/Builder/ListBuilder.php b/src/Builder/ListBuilder.php
index a57a6a1d4..1bf5f77df 100644
--- a/src/Builder/ListBuilder.php
+++ b/src/Builder/ListBuilder.php
@@ -31,7 +31,7 @@ final class ListBuilder implements ListBuilderInterface
      * @param string[] $templates
      */
     public function __construct(
-        private TypeGuesserInterface $guesser,
+        private readonly TypeGuesserInterface $guesser,
         private array $templates = [],
     ) {
     }
diff --git a/src/Builder/ShowBuilder.php b/src/Builder/ShowBuilder.php
index 152b0c97e..927f27965 100644
--- a/src/Builder/ShowBuilder.php
+++ b/src/Builder/ShowBuilder.php
@@ -29,7 +29,7 @@ final class ShowBuilder implements ShowBuilderInterface
      * @param string[] $templates
      */
     public function __construct(
-        private TypeGuesserInterface $guesser,
+        private readonly TypeGuesserInterface $guesser,
         private array $templates,
     ) {
     }
diff --git a/src/Exporter/DataSource.php b/src/Exporter/DataSource.php
index ec47b7233..aed35b745 100644
--- a/src/Exporter/DataSource.php
+++ b/src/Exporter/DataSource.php
@@ -95,7 +95,7 @@ private function findFieldName(ProxyQueryInterface $query, string $alias): ?stri
                 $joinAlias = $joinPart->getAlias();
 
                 if ($joinAlias === $alias) {
-                    $joinParts = explode('.', $join);
+                    $joinParts = explode('.', (string) $join);
 
                     return end($joinParts);
                 }
diff --git a/src/FieldDescription/FieldDescriptionFactory.php b/src/FieldDescription/FieldDescriptionFactory.php
index 41ea51f53..901f734c5 100644
--- a/src/FieldDescription/FieldDescriptionFactory.php
+++ b/src/FieldDescription/FieldDescriptionFactory.php
@@ -23,7 +23,7 @@
 
 final class FieldDescriptionFactory implements FieldDescriptionFactoryInterface
 {
-    public function __construct(private ManagerRegistry $registry)
+    public function __construct(private readonly ManagerRegistry $registry)
     {
     }
 
diff --git a/src/Filter/ModelFilter.php b/src/Filter/ModelFilter.php
index c7bed61af..68d811df5 100644
--- a/src/Filter/ModelFilter.php
+++ b/src/Filter/ModelFilter.php
@@ -126,7 +126,7 @@ private function getParentAlias(ProxyQueryInterface $query, string $alias): stri
         if (isset($joins[$rootAlias])) {
             foreach ($joins[$rootAlias] as $join) {
                 if ($join->getAlias() === $alias) {
-                    $parts = explode('.', $join->getJoin());
+                    $parts = explode('.', (string) $join->getJoin());
                     $parentAlias = $parts[0];
 
                     break;
diff --git a/src/Model/AuditReader.php b/src/Model/AuditReader.php
index a558a1246..be5d02101 100644
--- a/src/Model/AuditReader.php
+++ b/src/Model/AuditReader.php
@@ -24,7 +24,7 @@
  */
 final class AuditReader implements AuditReaderInterface
 {
-    public function __construct(private SimpleThingsAuditReader $auditReader)
+    public function __construct(private readonly SimpleThingsAuditReader $auditReader)
     {
     }
 
diff --git a/src/Model/ModelManager.php b/src/Model/ModelManager.php
index 9509afd2b..4656b0fc8 100644
--- a/src/Model/ModelManager.php
+++ b/src/Model/ModelManager.php
@@ -53,8 +53,8 @@ final class ModelManager implements ModelManagerInterface, LockInterface, ProxyR
     private array $cache = [];
 
     public function __construct(
-        private ManagerRegistry $registry,
-        private PropertyAccessorInterface $propertyAccessor,
+        private readonly ManagerRegistry $registry,
+        private readonly PropertyAccessorInterface $propertyAccessor,
     ) {
     }
 
diff --git a/src/Util/ObjectAclManipulator.php b/src/Util/ObjectAclManipulator.php
index 4e18193dd..cdc8e5d1d 100644
--- a/src/Util/ObjectAclManipulator.php
+++ b/src/Util/ObjectAclManipulator.php
@@ -26,7 +26,7 @@
 
 final class ObjectAclManipulator extends BaseObjectAclManipulator
 {
-    public function __construct(private ManagerRegistry $registry)
+    public function __construct(private readonly ManagerRegistry $registry)
     {
     }
 
diff --git a/src/Util/SmartPaginatorFactory.php b/src/Util/SmartPaginatorFactory.php
index 6c29bcf09..bb3f6ecd3 100644
--- a/src/Util/SmartPaginatorFactory.php
+++ b/src/Util/SmartPaginatorFactory.php
@@ -158,7 +158,7 @@ private static function hasOrderByWithToManyAssociation(ProxyQueryInterface $pro
         foreach ($orderByParts as $orderByPart) {
             foreach ($orderByPart->getParts() as $part) {
                 foreach ($joinAliases as $joinAlias) {
-                    if (str_starts_with($part, $joinAlias.'.')) {
+                    if (str_starts_with((string) $part, $joinAlias.'.')) {
                         return true;
                     }
                 }
diff --git a/tests/Filter/CallbackFilterTest.php b/tests/Filter/CallbackFilterTest.php
index 8d57ba7b2..bf8b5182d 100644
--- a/tests/Filter/CallbackFilterTest.php
+++ b/tests/Filter/CallbackFilterTest.php
@@ -58,7 +58,7 @@ public function testFilterMethod(): void
 
         $filter = new CallbackFilter();
         $filter->initialize('field_name', [
-            'callback' => [$this, 'customCallback'],
+            'callback' => $this->customCallback(...),
         ]);
 
         $filter->filter($proxyQuery, 'alias', 'field', FilterData::fromArray(['value' => 'myValue']));
diff --git a/tests/Fixtures/DoctrineType/ValueObjectWithMagicToStringImpl.php b/tests/Fixtures/DoctrineType/ValueObjectWithMagicToStringImpl.php
index 9df96b09d..44297d111 100644
--- a/tests/Fixtures/DoctrineType/ValueObjectWithMagicToStringImpl.php
+++ b/tests/Fixtures/DoctrineType/ValueObjectWithMagicToStringImpl.php
@@ -15,7 +15,7 @@
 
 final class ValueObjectWithMagicToStringImpl implements \Stringable
 {
-    public function __construct(private string $uuid)
+    public function __construct(private readonly string $uuid)
     {
     }
 
diff --git a/tests/Fixtures/DoctrineType/ValueObjectWithToStringImpl.php b/tests/Fixtures/DoctrineType/ValueObjectWithToStringImpl.php
index ca9d65ac2..c658d1454 100644
--- a/tests/Fixtures/DoctrineType/ValueObjectWithToStringImpl.php
+++ b/tests/Fixtures/DoctrineType/ValueObjectWithToStringImpl.php
@@ -15,7 +15,7 @@
 
 final class ValueObjectWithToStringImpl
 {
-    public function __construct(private string $uuid)
+    public function __construct(private readonly string $uuid)
     {
     }
 
diff --git a/tests/Fixtures/Entity/AssociatedEntity.php b/tests/Fixtures/Entity/AssociatedEntity.php
index 4307b44e7..f1dd6ceb7 100644
--- a/tests/Fixtures/Entity/AssociatedEntity.php
+++ b/tests/Fixtures/Entity/AssociatedEntity.php
@@ -19,7 +19,7 @@ final class AssociatedEntity
 {
     public function __construct(
         public EmbeddedEntity $embeddedEntity,
-        private int $plainField,
+        private readonly int $plainField,
     ) {
     }
 
diff --git a/tests/Fixtures/Entity/ContainerEntity.php b/tests/Fixtures/Entity/ContainerEntity.php
index 6b6760710..e48ebfdd8 100644
--- a/tests/Fixtures/Entity/ContainerEntity.php
+++ b/tests/Fixtures/Entity/ContainerEntity.php
@@ -20,7 +20,7 @@ final class ContainerEntity
     public ?int $plainField = null;
 
     public function __construct(
-        private AssociatedEntity $associatedEntity,
+        private readonly AssociatedEntity $associatedEntity,
         public EmbeddedEntity $embeddedEntity,
     ) {
     }
diff --git a/tests/Fixtures/Entity/Product.php b/tests/Fixtures/Entity/Product.php
index e316aaaf1..ae506f7d9 100644
--- a/tests/Fixtures/Entity/Product.php
+++ b/tests/Fixtures/Entity/Product.php
@@ -16,8 +16,8 @@
 final class Product
 {
     public function __construct(
-        private ProductId $id,
-        private string $name,
+        private readonly ProductId $id,
+        private readonly string $name,
     ) {
     }
 
diff --git a/tests/Fixtures/Entity/ProductId.php b/tests/Fixtures/Entity/ProductId.php
index e00b0e39e..3b6e39155 100644
--- a/tests/Fixtures/Entity/ProductId.php
+++ b/tests/Fixtures/Entity/ProductId.php
@@ -15,7 +15,7 @@
 
 final class ProductId
 {
-    public function __construct(private int $id)
+    public function __construct(private readonly int $id)
     {
     }
 
diff --git a/tests/Fixtures/Entity/UuidBinaryEntity.php b/tests/Fixtures/Entity/UuidBinaryEntity.php
index e46823f05..1f98cb828 100644
--- a/tests/Fixtures/Entity/UuidBinaryEntity.php
+++ b/tests/Fixtures/Entity/UuidBinaryEntity.php
@@ -15,7 +15,7 @@
 
 final class UuidBinaryEntity
 {
-    public function __construct(private object $uuid)
+    public function __construct(private readonly object $uuid)
     {
     }
 
diff --git a/tests/Fixtures/Entity/UuidEntity.php b/tests/Fixtures/Entity/UuidEntity.php
index 3e89bc5ae..b64d0b3db 100644
--- a/tests/Fixtures/Entity/UuidEntity.php
+++ b/tests/Fixtures/Entity/UuidEntity.php
@@ -17,7 +17,7 @@
 
 final class UuidEntity
 {
-    public function __construct(private NonIntegerIdentifierTestClass $uuid)
+    public function __construct(private readonly NonIntegerIdentifierTestClass $uuid)
     {
     }
 
diff --git a/tests/Fixtures/Util/NonIntegerIdentifierTestClass.php b/tests/Fixtures/Util/NonIntegerIdentifierTestClass.php
index 0fd3f5524..3f1c96686 100644
--- a/tests/Fixtures/Util/NonIntegerIdentifierTestClass.php
+++ b/tests/Fixtures/Util/NonIntegerIdentifierTestClass.php
@@ -20,7 +20,7 @@
  */
 final class NonIntegerIdentifierTestClass implements \Stringable
 {
-    public function __construct(private string $uuid)
+    public function __construct(private readonly string $uuid)
     {
     }