diff --git a/composer.json b/composer.json
index 0bac3b1..b74c72d 100644
--- a/composer.json
+++ b/composer.json
@@ -42,6 +42,10 @@
         }
     },
     "config": {
+        "allow-plugins": {
+            "bamarni/composer-bin-plugin": true,
+            "symfony/flex": true
+        },
         "optimize-autoloader": true,
         "preferred-install": {
             "*": "dist"
diff --git a/src/Service/CodeRunner/ConfigurationRunner.php b/src/Service/CodeRunner/ConfigurationRunner.php
index 3bd2e1e..e2a9f84 100644
--- a/src/Service/CodeRunner/ConfigurationRunner.php
+++ b/src/Service/CodeRunner/ConfigurationRunner.php
@@ -13,7 +13,7 @@
  *
  * @author Tobias Nyholm <tobias.nyholm@gmail.com>
  */
-class ConfigurationRunner
+class ConfigurationRunner implements Runner
 {
     /**
      * @param list<CodeNode> $nodes
@@ -77,7 +77,7 @@ private function getFile(CodeNode $node, array $contents): string
         $regex = match ($node->getLanguage()) {
             'php' => '|^// ?([a-z1-9A-Z_\-/]+\.php)$|',
             'yaml' => '|^# ?([a-z1-9A-Z_\-/]+\.yaml)$|',
-            //'xml' => '|^<!-- ?([a-z1-9A-Z_\-/]+\.xml) ?-->$|',
+            'xml' => '|^<!-- ?([a-z1-9A-Z_\-/]+\.xml) ?-->$|',
             default => null,
         };