diff --git a/composer.json b/composer.json
index fbcbe56f..3c14bf30 100644
--- a/composer.json
+++ b/composer.json
@@ -9,17 +9,17 @@
         "Audit"
     ],
     "require": {
-        "php": "^8.1",
+        "php": "^8.0",
         "doctrine/collections": "^1.8 || ^2.0",
         "doctrine/dbal": "^3.6",
         "doctrine/event-manager": "^1.2 || ^2.0",
         "doctrine/orm": "^2.14 || ^3.0",
         "doctrine/persistence": "^3.0",
         "psr/clock": "^1.0",
-        "symfony/config": "^6.4 || ^7.1",
-        "symfony/dependency-injection": "^6.4 || ^7.1",
-        "symfony/http-kernel": "^6.4 || ^7.1",
-        "symfony/security-core": "^6.4 || ^7.1",
+        "symfony/config": "^5.4 || ^6.2 || ^7.0",
+        "symfony/dependency-injection": "^5.4 || ^6.2 || ^7.0",
+        "symfony/http-kernel": "^5.4 || ^6.2 || ^7.0",
+        "symfony/security-core": "^5.4 || ^6.2 || ^7.0",
         "twig/twig": "^3.0"
     },
     "require-dev": {
@@ -38,15 +38,15 @@
         "psalm/plugin-phpunit": "^0.18",
         "psalm/plugin-symfony": "^5.0",
         "rector/rector": "^1.1",
-        "symfony/browser-kit": "^6.4 || ^7.1",
-        "symfony/cache": "^6.4 || ^7.1",
-        "symfony/filesystem": "^6.4 || ^7.1",
-        "symfony/framework-bundle": "^6.4 || ^7.1",
-        "symfony/http-foundation": "^6.4 || ^7.1",
-        "symfony/phpunit-bridge": "^6.4 || ^7.1",
-        "symfony/security-bundle": "^6.4 || ^7.1",
-        "symfony/twig-bundle": "^6.4 || ^7.1",
-        "symfony/var-dumper": "^6.4 || ^7.1",
+        "symfony/browser-kit": "^5.4 || ^6.2 || ^7.0",
+        "symfony/cache": "^5.4 || ^6.2 || ^7.0",
+        "symfony/filesystem": "^5.4 || ^6.2 || ^7.0",
+        "symfony/framework-bundle": "^5.4 || ^6.2 || ^7.0",
+        "symfony/http-foundation": "^5.4 || ^6.2 || ^7.0",
+        "symfony/phpunit-bridge": "^6.2",
+        "symfony/security-bundle": "^5.4 || ^6.2 || ^7.0",
+        "symfony/twig-bundle": "^5.4 || ^6.2 || ^7.0",
+        "symfony/var-dumper": "^5.4 || ^6.2 || ^7.0",
         "vimeo/psalm": "^5.7"
     },
     "conflict": {
diff --git a/src/Action/CompareAction.php b/src/Action/CompareAction.php
index 5c82e8ed..4041fd5f 100644
--- a/src/Action/CompareAction.php
+++ b/src/Action/CompareAction.php
@@ -21,8 +21,8 @@
 final class CompareAction
 {
     public function __construct(
-        private readonly Environment $twig,
-        private readonly AuditReader $auditReader,
+        private Environment $twig,
+        private AuditReader $auditReader,
     ) {
     }
 
diff --git a/src/Action/IndexAction.php b/src/Action/IndexAction.php
index d2d7b11a..0cc119f1 100644
--- a/src/Action/IndexAction.php
+++ b/src/Action/IndexAction.php
@@ -20,8 +20,8 @@
 final class IndexAction
 {
     public function __construct(
-        private readonly Environment $twig,
-        private readonly AuditReader $auditReader,
+        private Environment $twig,
+        private AuditReader $auditReader,
     ) {
     }
 
diff --git a/src/Action/ViewDetailAction.php b/src/Action/ViewDetailAction.php
index 777c53fc..3cdc0437 100644
--- a/src/Action/ViewDetailAction.php
+++ b/src/Action/ViewDetailAction.php
@@ -21,8 +21,8 @@
 final class ViewDetailAction
 {
     public function __construct(
-        private readonly Environment $twig,
-        private readonly AuditReader $auditReader,
+        private Environment $twig,
+        private AuditReader $auditReader,
     ) {
     }
 
diff --git a/src/Action/ViewEntityAction.php b/src/Action/ViewEntityAction.php
index c80f5eb7..da2bf386 100644
--- a/src/Action/ViewEntityAction.php
+++ b/src/Action/ViewEntityAction.php
@@ -20,8 +20,8 @@
 final class ViewEntityAction
 {
     public function __construct(
-        private readonly Environment $twig,
-        private readonly AuditReader $auditReader,
+        private Environment $twig,
+        private AuditReader $auditReader,
     ) {
     }
 
diff --git a/src/Action/ViewRevisionAction.php b/src/Action/ViewRevisionAction.php
index 5f4c168c..a9102e97 100644
--- a/src/Action/ViewRevisionAction.php
+++ b/src/Action/ViewRevisionAction.php
@@ -22,8 +22,8 @@
 final class ViewRevisionAction
 {
     public function __construct(
-        private readonly Environment $twig,
-        private readonly AuditReader $auditReader,
+        private Environment $twig,
+        private AuditReader $auditReader,
     ) {
     }
 
diff --git a/src/AuditManager.php b/src/AuditManager.php
index 0acf0a33..98b88f33 100644
--- a/src/AuditManager.php
+++ b/src/AuditManager.php
@@ -26,11 +26,11 @@
  */
 class AuditManager
 {
-    private readonly MetadataFactory $metadataFactory;
+    private MetadataFactory $metadataFactory;
 
     public function __construct(
-        private readonly AuditConfiguration $config,
-        private readonly ?ClockInterface $clock = null,
+        private AuditConfiguration $config,
+        private ?ClockInterface $clock = null,
     ) {
         $this->metadataFactory = $config->createMetadataFactory();
     }
diff --git a/src/ChangedEntity.php b/src/ChangedEntity.php
index a5061ac3..f48e04ba 100644
--- a/src/ChangedEntity.php
+++ b/src/ChangedEntity.php
@@ -25,10 +25,10 @@ class ChangedEntity
      * @phpstan-param T $entity
      */
     public function __construct(
-        private readonly string $className,
-        private readonly array $id,
-        private readonly string $revType,
-        private readonly object $entity,
+        private string $className,
+        private array $id,
+        private string $revType,
+        private object $entity,
     ) {
     }
 
diff --git a/src/DeferredChangedManyToManyEntityRevisionToPersist.php b/src/DeferredChangedManyToManyEntityRevisionToPersist.php
index 5e4f008a..56eac1cc 100644
--- a/src/DeferredChangedManyToManyEntityRevisionToPersist.php
+++ b/src/DeferredChangedManyToManyEntityRevisionToPersist.php
@@ -28,12 +28,12 @@ final class DeferredChangedManyToManyEntityRevisionToPersist
      * @param ClassMetadata<object>                            $targetClass
      */
     public function __construct(
-        private readonly object $entity,
-        private readonly string $revType,
-        private readonly array $entityData,
-        private readonly array|ManyToManyOwningSideMapping $assoc,
-        private readonly ClassMetadata $class,
-        private readonly ClassMetadata $targetClass,
+        private object $entity,
+        private string $revType,
+        private array $entityData,
+        private array|ManyToManyOwningSideMapping $assoc,
+        private ClassMetadata $class,
+        private ClassMetadata $targetClass,
     ) {
     }
 
diff --git a/src/EventListener/CacheListener.php b/src/EventListener/CacheListener.php
index 5745db3f..ff0b218d 100644
--- a/src/EventListener/CacheListener.php
+++ b/src/EventListener/CacheListener.php
@@ -22,7 +22,7 @@
  */
 final class CacheListener implements EventSubscriber
 {
-    public function __construct(private readonly AuditReader $auditReader)
+    public function __construct(private AuditReader $auditReader)
     {
     }
 
diff --git a/src/Revision.php b/src/Revision.php
index eda368a5..ad42d3e9 100644
--- a/src/Revision.php
+++ b/src/Revision.php
@@ -23,8 +23,8 @@ class Revision
      */
     public function __construct(
         private $rev,
-        private readonly \DateTime $timestamp,
-        private readonly ?string $username,
+        private \DateTime $timestamp,
+        private ?string $username,
     ) {
     }
 
diff --git a/tests/ClockTest.php b/tests/ClockTest.php
index 3e6feebc..22cb02e6 100644
--- a/tests/ClockTest.php
+++ b/tests/ClockTest.php
@@ -50,7 +50,7 @@ public function testFixedClockIsUsed(): void
     protected function getClock(): ClockInterface
     {
         return new class($this->getFixedTime()) implements ClockInterface {
-            public function __construct(private readonly \DateTimeImmutable $now)
+            public function __construct(private \DateTimeImmutable $now)
             {
             }