diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index 5117c60c6a2..bf70d2c797f 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -7,6 +7,7 @@ Yii Framework 2 Change Log
 - Bug #19243: Handle `finfo_open` for tar.xz as `application/octet-stream` on PHP 8.1 (longthanhtran)
 - Bug #19235: Fix return type compatibility of `yii\web\SessionIterator` class methods for PHP 8.1 (virtual-designer)
 - Bug #19291: Reset errors and validators in `yii\base\Model::__clone()` (WinterSilence)
+- Enh #19309: Optimize `yii\base\Model::attributes()` (WinterSilence)
 
 
 2.0.45 February 11, 2022
diff --git a/framework/base/Model.php b/framework/base/Model.php
index 900bb0c610b..74f8da35aba 100644
--- a/framework/base/Model.php
+++ b/framework/base/Model.php
@@ -260,21 +260,15 @@ public function formName()
 
     /**
      * Returns the list of attribute names.
+     *
      * By default, this method returns all public non-static properties of the class.
      * You may override this method to change the default behavior.
-     * @return array list of attribute names.
+     *
+     * @return string[] list of attribute names.
      */
     public function attributes()
     {
-        $class = new ReflectionClass($this);
-        $names = [];
-        foreach ($class->getProperties(\ReflectionProperty::IS_PUBLIC) as $property) {
-            if (!$property->isStatic()) {
-                $names[] = $property->getName();
-            }
-        }
-
-        return $names;
+        return array_keys(Yii::getObjectVars($this));
     }
 
     /**