diff --git a/e2e/parallel-custom-config/expected-output.diff b/e2e/parallel-custom-config/expected-output.diff
index 147b2d59b84..f89d642f6d8 100644
--- a/e2e/parallel-custom-config/expected-output.diff
+++ b/e2e/parallel-custom-config/expected-output.diff
@@ -9,6 +9,9 @@
  {
      public function __construct(
 -        private readonly \stdClass $stdClass
++        /**
++         * @readonly
++         */
 +        private \stdClass $stdClass
      )
      {