diff --git a/tests/Language/AbstractTranslationTestCase.php b/tests/Language/AbstractTranslationTestCase.php
index ce5db5766..d8e68f9b5 100644
--- a/tests/Language/AbstractTranslationTestCase.php
+++ b/tests/Language/AbstractTranslationTestCase.php
@@ -87,7 +87,8 @@ abstract class AbstractTranslationTestCase extends TestCase
      * class and the contained values will be skipped in
      * testAllIncludedLanguageKeysAreTranslated.
      *
-     * @var array<string, string>
+     * @var string[]
+     * @phpstan-var list<string>
      */
     protected array $excludedLocaleKeyTranslations = [];