diff --git a/src/Subject.php b/src/Subject.php
index 77cbf9a..b083555 100644
--- a/src/Subject.php
+++ b/src/Subject.php
@@ -9,6 +9,7 @@ abstract class Subject
     /**
      * @var array<int, Observer>
      * @phpstan-var list<Observer>
+     * @psalm-var list<Observer>
      */
     protected $observers = [];