diff --git a/composer.json b/composer.json
index 32bdc647..280c7701 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "phpstan/phpstan-webmozart-assert": "^2.0",
         "phpunit/phpunit": "^11.5",
         "rector/jack": "^0.5.1",
-        "rector/rector-src": "dev-main",
+        "rector/rector-src": "dev-bump-phpstan-226",
         "rector/swiss-knife": "^2.3",
         "rector/type-perfect": "^2.1",
         "symplify/easy-coding-standard": "^13.0",
diff --git a/rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Fixture/keep_nullable_trio_docblock.php.inc b/rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Fixture/keep_nullable_trio_docblock.php.inc
index dfa34a3a..5ef42348 100644
--- a/rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Fixture/keep_nullable_trio_docblock.php.inc
+++ b/rules-tests/DowngradePhp80/Rector/FunctionLike/DowngradeUnionTypeDeclarationRector/Fixture/keep_nullable_trio_docblock.php.inc
@@ -16,7 +16,7 @@ namespace Rector\Tests\DowngradePhp80\Rector\FunctionLike\DowngradeUnionTypeDecl
 final class NullableTrioDocblock
 {
     /**
-     * @return int|string|null
+     * @return int|null|string
      */
     public function run($value)
     {
diff --git a/src/PhpDocDecorator/PhpDocFromTypeDeclarationDecorator.php b/src/PhpDocDecorator/PhpDocFromTypeDeclarationDecorator.php
index 48753c50..47017883 100644
--- a/src/PhpDocDecorator/PhpDocFromTypeDeclarationDecorator.php
+++ b/src/PhpDocDecorator/PhpDocFromTypeDeclarationDecorator.php
@@ -41,23 +41,23 @@
 /**
  * @see https://wiki.php.net/rfc/internal_method_return_types#proposal
  */
-final class PhpDocFromTypeDeclarationDecorator
+final readonly class PhpDocFromTypeDeclarationDecorator
 {
     /**
      * @var ClassMethodWillChangeReturnType[]
      */
-    private array $classMethodWillChangeReturnTypes = [];
+    private array $classMethodWillChangeReturnTypes;
 
     public function __construct(
-        private readonly StaticTypeMapper $staticTypeMapper,
-        private readonly PhpDocInfoFactory $phpDocInfoFactory,
-        private readonly NodeNameResolver $nodeNameResolver,
-        private readonly PhpDocTypeChanger $phpDocTypeChanger,
-        private readonly PhpAttributeGroupFactory $phpAttributeGroupFactory,
-        private readonly ReflectionResolver $reflectionResolver,
-        private readonly PhpAttributeAnalyzer $phpAttributeAnalyzer,
-        private readonly PhpVersionProvider $phpVersionProvider,
-        private readonly AstResolver $astResolver
+        private StaticTypeMapper $staticTypeMapper,
+        private PhpDocInfoFactory $phpDocInfoFactory,
+        private NodeNameResolver $nodeNameResolver,
+        private PhpDocTypeChanger $phpDocTypeChanger,
+        private PhpAttributeGroupFactory $phpAttributeGroupFactory,
+        private ReflectionResolver $reflectionResolver,
+        private PhpAttributeAnalyzer $phpAttributeAnalyzer,
+        private PhpVersionProvider $phpVersionProvider,
+        private AstResolver $astResolver
     ) {
         $this->classMethodWillChangeReturnTypes = [
             // @todo how to make list complete? is the method list needed or can we use just class names?