diff --git a/rules-tests/Php83/Rector/Class_/ReadOnlyAnonymousClassRector/Fixture/skip_anonymous_class_with_attribute.php.inc b/rules-tests/Php83/Rector/Class_/ReadOnlyAnonymousClassRector/Fixture/skip_anonymous_class_with_attribute.php.inc
new file mode 100644
index 00000000000..a64c6cc563d
--- /dev/null
+++ b/rules-tests/Php83/Rector/Class_/ReadOnlyAnonymousClassRector/Fixture/skip_anonymous_class_with_attribute.php.inc
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\Tests\Php83\Rector\Class_\ReadOnlyAnonymousClassRector\Fixture;
+
+$attributed = new #[Tries(5)] class(4)
+{
+    public function __construct(
+        private readonly int $attempts,
+    ) {}
+
+    public function attempts(): int
+    {
+        return $this->attempts;
+    }
+};
diff --git a/rules/Php83/Rector/Class_/ReadOnlyAnonymousClassRector.php b/rules/Php83/Rector/Class_/ReadOnlyAnonymousClassRector.php
index e1206e3df49..c12646158be 100644
--- a/rules/Php83/Rector/Class_/ReadOnlyAnonymousClassRector.php
+++ b/rules/Php83/Rector/Class_/ReadOnlyAnonymousClassRector.php
@@ -68,6 +68,11 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
+        // attribute between "new" and "class" cannot be format-preserving printed with an added readonly modifier
+        if ($node->attrGroups !== []) {
+            return null;
+        }
+
         return $this->readonlyClassManipulator->process($node);
     }