diff --git a/src/SettingsContainerAbstract.php b/src/SettingsContainerAbstract.php
index 6b7a1ec..67cc2ce 100644
--- a/src/SettingsContainerAbstract.php
+++ b/src/SettingsContainerAbstract.php
@@ -153,6 +153,7 @@ public function fromJSON(string $json):SettingsContainerInterface{
 
 	/**
 	 * @inheritdoc
+	 * @phan-suppress PhanUndeclaredClassAttribute
 	 */
 	#[\ReturnTypeWillChange]
 	public function jsonSerialize():array{