diff --git a/phpunit.xml b/phpunit.xml
index 5ecb5b4..981a734 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,23 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
-		 backupStaticAttributes="false"
-		 bootstrap="tests/bootstrap.php"
-		 colors="true"
-		 convertErrorsToExceptions="true"
-		 convertNoticesToExceptions="true"
-		 convertWarningsToExceptions="true"
-		 processIsolation="false"
-		 stopOnFailure="false"
-		 verbose="true">
-	<testsuite name="Matomo-PHP-API Test Suite">
-		<directory>tests</directory>
-	</testsuite>
-	<filter>
-		<whitelist processUncoveredFilesFromWhitelist="true">
-			<directory suffix=".php">./src</directory>
-		</whitelist>
-	</filter>
-	<logging>
-		<log type="coverage-html" target="build/coverage/"/>
-	</logging>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" backupGlobals="false" backupStaticAttributes="false" bootstrap="tests/bootstrap.php" colors="true" convertErrorsToExceptions="true" convertNoticesToExceptions="true" convertWarningsToExceptions="true" processIsolation="false" stopOnFailure="false" verbose="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
+  <coverage processUncoveredFiles="true">
+    <include>
+      <directory suffix=".php">./src</directory>
+    </include>
+    <report>
+      <html outputDirectory="build/coverage/"/>
+    </report>
+  </coverage>
+  <testsuite name="Matomo-PHP-API Test Suite">
+    <directory>tests</directory>
+  </testsuite>
+  <logging/>
 </phpunit>
