diff --git a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
index fab7cf1867..62d53af8a0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/UrlValidatorTest.php
@@ -194,6 +194,7 @@ class UrlValidatorTest extends AbstractConstraintValidatorTest
 
     /**
      * @dataProvider getCheckDns
+     * @requires function Symfony\Bridge\PhpUnit\DnsMock::withMockedHosts
      */
     public function testCheckDns($violation)
     {