diff --git a/composer.json b/composer.json
index 90a2967..f2f8022 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         "psr/simple-cache": "^3.0.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^11.3",
         "mikey179/vfsstream": "^1.6",
         "squizlabs/php_codesniffer": "^3.7",
         "silverstripe/standards": "^1",
diff --git a/tests/Transformer/YamlTransformerTest.php b/tests/Transformer/YamlTransformerTest.php
index 89987cc..cfc66cb 100644
--- a/tests/Transformer/YamlTransformerTest.php
+++ b/tests/Transformer/YamlTransformerTest.php
@@ -9,6 +9,7 @@
 use org\bovigo\vfs\vfsStream;
 use Symfony\Component\Finder\Finder;
 use MJS\TopSort\CircularDependencyException;
+use PHPUnit\Framework\Attributes\DoesNotPerformAssertions;
 
 class YamlTransformerTest extends TestCase
 {
@@ -74,8 +75,8 @@ protected function getConfigDirectory()
 
     /**
      * Test that we can have an empty file without throwing any errors.
-     * @doesNotPerformAssertions
      */
+    #[DoesNotPerformAssertions]
     public function testEmptyFileIgnored()
     {
         file_put_contents($this->getFilePath('empty.yml') ?? '', '');