diff --git a/config/packages/asset_mapper.php b/config/packages/asset_mapper.php
index 4b68e6a..c18fd42 100644
--- a/config/packages/asset_mapper.php
+++ b/config/packages/asset_mapper.php
@@ -2,22 +2,21 @@
 
 declare(strict_types=1);
 
+use Symfony\Config\FrameworkConfig;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 
-return static function (ContainerConfigurator $containerConfigurator): void {
-    $containerConfigurator->extension('framework', [
-        'asset_mapper' => [
-            'paths' => [
-                'assets/',
-            ],
-            'missing_import_mode' => 'strict',
-        ],
-    ]);
+return static function (
+    ContainerConfigurator $containerConfigurator,
+    FrameworkConfig $frameworkConfig,
+): void {
+    $frameworkConfig
+        ->assetMapper()
+        ->missingImportMode('strict')
+        ->importmapPolyfill(false)
+        ->path('assets/', true);
     if ($containerConfigurator->env() === 'prod') {
-        $containerConfigurator->extension('framework', [
-            'asset_mapper' => [
-                'missing_import_mode' => 'warn',
-            ],
-        ]);
+        $frameworkConfig
+            ->assetMapper()
+            ->missingImportMode('ignore');
     }
 };