diff --git a/composer.json b/composer.json
index 9f0855d..4191c9d 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require": {
         "php": ">=8.4",
         "ext-mbstring": "*",
-        "illuminate/support": "^11.14.0|^12.16.0",
+        "illuminate/support": "^11.14.0|^12.16.0|^13.0.0",
         "jetbrains/phpstorm-attributes": "^1.1",
         "nesbot/carbon": "^3.8.4"
     },
diff --git a/tests/Unit/StringUtilTest.php b/tests/Unit/StringUtilTest.php
index 672e5af..c5d185b 100644
--- a/tests/Unit/StringUtilTest.php
+++ b/tests/Unit/StringUtilTest.php
@@ -244,7 +244,6 @@ public function testToArray(): void
         self::assertCount(3, $arrResult);
 
         // Empty delimiter
-        $strString = '1,0,3';
         $arrResult = StringUtil::toArray($strString, '');
         self::assertNull($arrResult);