diff --git a/src/LiveComponent/src/Util/LiveAttributesCollection.php b/src/LiveComponent/src/Util/LiveAttributesCollection.php
index 7c99a19f8e7..8f704689554 100644
--- a/src/LiveComponent/src/Util/LiveAttributesCollection.php
+++ b/src/LiveComponent/src/Util/LiveAttributesCollection.php
@@ -12,6 +12,7 @@
 namespace Symfony\UX\LiveComponent\Util;
 
 use Twig\Environment;
+use Twig\Extension\EscaperExtension;
 
 /**
  * An array of attributes that can eventually be returned as an escaped array.
@@ -99,6 +100,8 @@ public function setBrowserEventsToDispatch(array $browserEventsToDispatch): void
 
     private function escapeAttribute(string $value): string
     {
-        return twig_escape_filter($this->twig, $value, 'html_attr');
+        $escapeExtension = new EscaperExtension();
+
+        return (string) $escapeExtension->escape($this->twig, $value, 'html_attr');
     }
 }
diff --git a/src/StimulusBundle/src/Dto/StimulusAttributes.php b/src/StimulusBundle/src/Dto/StimulusAttributes.php
index fe0b76929ae..908bab4b146 100644
--- a/src/StimulusBundle/src/Dto/StimulusAttributes.php
+++ b/src/StimulusBundle/src/Dto/StimulusAttributes.php
@@ -14,6 +14,7 @@
 namespace Symfony\UX\StimulusBundle\Dto;
 
 use Twig\Environment;
+use Twig\Extension\EscaperExtension;
 
 /**
  * Helper to build Stimulus-related HTML attributes.
@@ -214,7 +215,9 @@ private function getFormattedValue(mixed $value): string
 
     private function escapeAsHtmlAttr(mixed $value): string
     {
-        return (string) twig_escape_filter($this->env, $value, 'html_attr');
+        $escapeExtension = new EscaperExtension();
+
+        return (string) $escapeExtension->escape($this->env, $value, 'html_attr');
     }
 
     /**