diff --git a/composer.json b/composer.json
index 4bc1aeb..2c3c043 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
     },
     "require-dev": {
         "ext-xdebug": "*",
-        "aplus/coding-standard": "^2.1",
+        "aplus/coding-standard": "^2.8",
         "ergebnis/composer-normalize": "^2.25",
         "jetbrains/phpstorm-attributes": "^1.0",
         "phpmd/phpmd": "^2.13",
diff --git a/src/Config.php b/src/Config.php
index dd51845..126701d 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -43,7 +43,7 @@ class Config
      */
     public function __construct(
         #[SensitiveParameter]
-        array | string $configs = null,
+        array | string | null $configs = null,
         #[SensitiveParameter]
         array $persistence = [],
         string $suffix = '.php'
diff --git a/src/Parsers/Parser.php b/src/Parsers/Parser.php
index 9aa4a73..734f839 100644
--- a/src/Parsers/Parser.php
+++ b/src/Parsers/Parser.php
@@ -96,7 +96,7 @@ protected static function addChild(array &$parent, array $childs, mixed $value)
      * @return array<int|string,mixed>|bool|float|int|string|null The output value
      */
     #[Pure]
-    protected static function getValue(string $value) : array|bool|int|float|string|null
+    protected static function getValue(string $value) : array | bool | float | int | string | null
     {
         $value = \trim($value);
         $lowerValue = \strtolower($value);
diff --git a/src/Parsers/XmlParser.php b/src/Parsers/XmlParser.php
index 8112010..782bf57 100644
--- a/src/Parsers/XmlParser.php
+++ b/src/Parsers/XmlParser.php
@@ -52,7 +52,7 @@ public static function parse(mixed $config) : array
      *
      * @return array<int|string,mixed>|bool|float|int|string|null
      */
-    protected static function parseValue(array|string $value) : array|bool|int|float|string|null
+    protected static function parseValue(array | string $value) : array | bool | float | int | string | null
     {
         if (\is_array($value)) {
             foreach ($value as &$val) {