diff --git a/src/EventListener/IndexPageListener.php b/src/EventListener/IndexPageListener.php
index ba41bc6..8e1885d 100644
--- a/src/EventListener/IndexPageListener.php
+++ b/src/EventListener/IndexPageListener.php
@@ -4,55 +4,42 @@ namespace MummertMedia\ContaoMeilisearchBundle\EventListener;
 
 use Contao\CoreBundle\ServiceAnnotation\Hook;
 use MummertMedia\ContaoMeilisearchBundle\Service\SearchDataProvider;
+use Psr\Log\LoggerInterface;
 
-/**
- * IndexPage Listener for Contao search index
- */
 class IndexPageListener
 {
     public function __construct(
-        private readonly SearchDataProvider $dataProvider
+        private readonly SearchDataProvider $dataProvider,
+        private readonly LoggerInterface $logger
     ) {}
 
     /**
-     * This hook is executed for every indexed document
-     *
      * @Hook("indexPage")
      */
     public function onIndexPage(string $content, array &$data, array &$set): void
     {
-        // ---------------------------------------------------------------------
-        // DEBUG: prove that the hook is executed (CLI + Frontend safe)
-        // ---------------------------------------------------------------------
-        error_log('[MEILI] onIndexPage fired');
+        // Log into Symfony / Monolog
+        $this->logger->info('[MEILI] onIndexPage fired', [
+            'type' => $set['type'] ?? null,
+            'set'  => $set,
+        ]);
 
-        // log basic context
-        error_log('[MEILI] type=' . ($set['type'] ?? 'NULL'));
-        error_log('[MEILI] set=' . json_encode($set, JSON_UNESCAPED_SLASHES));
-
-        // ---------------------------------------------------------------------
-        // Fetch search data (priority + keywords)
-        // ---------------------------------------------------------------------
         $searchData = $this->dataProvider->getSearchData($set);
 
-        // log provider result
-        error_log('[MEILI] provider result=' . json_encode($searchData));
+        $this->logger->info('[MEILI] provider result', [
+            'result' => $searchData,
+        ]);
 
         if ($searchData === null) {
-            error_log('[MEILI] no search data resolved');
             return;
         }
 
-        // ---------------------------------------------------------------------
-        // Write into tl_search (this array IS the DB record)
-        // ---------------------------------------------------------------------
         $data['priority'] = (int) $searchData['priority'];
         $data['keywords'] = (string) $searchData['keywords'];
 
-        // final confirmation
-        error_log('[MEILI] tl_search updated: priority='
-            . $data['priority']
-            . ' keywords="' . $data['keywords'] . '"'
-        );
+        $this->logger->info('[MEILI] tl_search updated', [
+            'priority' => $data['priority'],
+            'keywords' => $data['keywords'],
+        ]);
     }
 }
\ No newline at end of file