diff --git a/README.md b/README.md
index 1ab32cc..aa3f614 100644
--- a/README.md
+++ b/README.md
@@ -193,6 +193,35 @@ class SomeTest extends ConfigurableKernelTestCase
 > The kernel configuration objects are *not* passed as arguments to the test method,
 > which means you can use them anywhere between your provided real test data.
 
+#### Custom Attributes
+
+You can create your own kernel configuration attributes by implementing the `KernelConfiguration` interface:
+
+```php
+use Neusta\Pimcore\TestingFramework\Kernel\TestKernel;
+use Neusta\Pimcore\TestingFramework\Test\Attribute\KernelConfiguration;
+
+#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD)]
+class ConfigureSomeBundle implements KernelConfiguration
+{
+    public function __construct(
+        private readonly array $config,
+    ) {
+    }
+
+    public function configure(TestKernel $kernel): void
+    {
+        $kernel->addTestBundle(SomeBundle::class);
+        $kernel->addTestExtensionConfig('some', array_merge(
+            ['default' => 'config'],
+            $this->config,
+        ));
+    }
+}
+```
+
+Then you can use the new class as an attribute or inside a data provider.
+
 ### Integration Tests With a Database
 
 If you write integration tests that use the database, we've got you covered too.
diff --git a/tests/Fixtures/Attribute/ConfigureConfigurationBundle.php b/tests/Fixtures/Attribute/ConfigureConfigurationBundle.php
new file mode 100644
index 0000000..e6175af
--- /dev/null
+++ b/tests/Fixtures/Attribute/ConfigureConfigurationBundle.php
@@ -0,0 +1,26 @@
+<?php
+declare(strict_types=1);
+
+namespace Neusta\Pimcore\TestingFramework\Tests\Fixtures\Attribute;
+
+use Neusta\Pimcore\TestingFramework\Kernel\TestKernel;
+use Neusta\Pimcore\TestingFramework\Test\Attribute\KernelConfiguration;
+use Neusta\Pimcore\TestingFramework\Tests\Fixtures\ConfigurationBundle\ConfigurationBundle;
+
+#[\Attribute(\Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD)]
+final class ConfigureConfigurationBundle implements KernelConfiguration
+{
+    public function __construct(
+        private readonly array $config,
+    ) {
+    }
+
+    public function configure(TestKernel $kernel): void
+    {
+        $kernel->addTestBundle(ConfigurationBundle::class);
+        $kernel->addTestExtensionConfig('configuration', array_merge(
+            ['bar' => ['value2', 'value3']],
+            $this->config,
+        ));
+    }
+}
diff --git a/tests/Functional/CustomAttributeTest.php b/tests/Functional/CustomAttributeTest.php
new file mode 100644
index 0000000..34e41ee
--- /dev/null
+++ b/tests/Functional/CustomAttributeTest.php
@@ -0,0 +1,40 @@
+<?php
+declare(strict_types=1);
+
+namespace Neusta\Pimcore\TestingFramework\Tests\Functional;
+
+use Neusta\Pimcore\TestingFramework\Test\ConfigurableKernelTestCase;
+use Neusta\Pimcore\TestingFramework\Tests\Fixtures\Attribute\ConfigureConfigurationBundle;
+
+final class CustomAttributeTest extends ConfigurableKernelTestCase
+{
+    /**
+     * @test
+     */
+    #[ConfigureConfigurationBundle(['foo' => 'value1'])]
+    public function configuration_via_attribute(): void
+    {
+        $container = self::getContainer();
+
+        self::assertSame('value1', $container->getParameter('configuration.foo'));
+        self::assertSame(['value2', 'value3'], $container->getParameter('configuration.bar'));
+    }
+
+    public function provideData(): iterable
+    {
+        yield [new ConfigureConfigurationBundle(['foo' => 'test1', 'bar' => ['test2', 'test3']])];
+    }
+
+    /**
+     * @test
+     *
+     * @dataProvider provideData
+     */
+    public function configuration_via_data_provider(): void
+    {
+        $container = self::getContainer();
+
+        self::assertSame('test1', $container->getParameter('configuration.foo'));
+        self::assertSame(['test2', 'test3'], $container->getParameter('configuration.bar'));
+    }
+}