diff --git a/composer.json b/composer.json
index 766a51f..be9a658 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         }
     },
     "require-dev": {
-        "assoconnect/php-quality-config": "^2"
+        "assoconnect/php-quality-config": "^2.2"
     },
     "require": {
         "php": "^8.3",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 797f2d1..ec76bf9 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="./vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
-  <coverage processUncoveredFiles="true">
-    <include>
-      <directory suffix=".php">./src</directory>
-    </include>
-  </coverage>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" bootstrap="./vendor/autoload.php" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd">
   <testsuites>
     <testsuite name="main">
       <directory>./tests/</directory>
     </testsuite>
   </testsuites>
+  <source>
+    <include>
+      <directory suffix=".php">./src</directory>
+    </include>
+  </source>
 </phpunit>
diff --git a/src/Normalizer/AbsolutePercentValueNormalizer.php b/src/Normalizer/AbsolutePercentValueNormalizer.php
index 235caba..a601ab3 100644
--- a/src/Normalizer/AbsolutePercentValueNormalizer.php
+++ b/src/Normalizer/AbsolutePercentValueNormalizer.php
@@ -59,7 +59,7 @@ public function denormalize(
         }
 
         try {
-            return new AbsolutePercentValue($data['type'], $data['value']);
+            return new AbsolutePercentValue($data['type'] ?? null, $data['value'] ?? null);
         } catch (Throwable $e) {
             throw new UnexpectedValueException(previous: $e);
         }