diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 3c69f20ff0..37ab50188e 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -333,6 +333,7 @@ class Request
             'SCRIPT_FILENAME' => '',
             'SERVER_PROTOCOL' => 'HTTP/1.1',
             'REQUEST_TIME' => time(),
+            'REQUEST_TIME_FLOAT' => microtime(true),
         ], $server);
 
         $server['PATH_INFO'] = '';
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
index c25297dbe4..f1ffd9a4dc 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/InlineFragmentRendererTest.php
@@ -23,6 +23,9 @@ use Symfony\Component\HttpKernel\HttpKernel;
 use Symfony\Component\HttpKernel\KernelEvents;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
+/**
+ * @group time-sensitive
+ */
 class InlineFragmentRendererTest extends TestCase
 {
     public function testRender()