diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 6d49e81916ac6..a56dbfd5f5c7e 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -76,7 +76,7 @@ jobs:
           # To run a PR with a patched phpunit-bridge, first submit the patch for the
           # phpunit-bridge as a separate PR against the next feature-branch then
           # uncomment and update the following line with that PR number
-          #SYMFONY_PHPUNIT_BRIDGE_PR=32886
+          SYMFONY_PHPUNIT_BRIDGE_PR=47252
 
           if [[ $SYMFONY_PHPUNIT_BRIDGE_PR ]]; then
             git fetch --depth=2 origin refs/pull/$SYMFONY_PHPUNIT_BRIDGE_PR/head
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
index bc46e4f447912..926423e0e3482 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
@@ -174,7 +174,9 @@ public function isBaselineDeprecation(Deprecation $deprecation)
             return false;
         }
 
-        if ($deprecation->originatesFromAnObject()) {
+        if ($deprecation->originatesFromDebugClassLoader()) {
+            $location = $deprecation->triggeringClass();
+        } elseif ($deprecation->originatesFromAnObject()) {
             $location = $deprecation->originatingClass().'::'.$deprecation->originatingMethod();
         } else {
             $location = 'procedural code';
diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Deprecation.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Deprecation.php
index 5eda2bafdfb10..8dc4824b112e4 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Deprecation.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Deprecation.php
@@ -40,6 +40,7 @@ class Deprecation
     private $originClass;
     private $originMethod;
     private $triggeringFile;
+    private $triggeringClass;
 
     /** @var string[] Absolute paths to vendor directories */
     private static $vendors;
@@ -59,6 +60,10 @@ class Deprecation
      */
     public function __construct($message, array $trace, $file)
     {
+        if (isset($trace[2]['class']) && DebugClassLoader::class === $trace[2]['class']) {
+            $this->triggeringClass = $trace[2]['args'][0];
+        }
+
         if (isset($trace[2]['function']) && 'trigger_deprecation' === $trace[2]['function']) {
             $file = $trace[2]['file'];
             array_splice($trace, 1, 1);
@@ -155,6 +160,26 @@ private function lineShouldBeSkipped(array $line)
         return 'ReflectionMethod' === $class || 0 === strpos($class, 'PHPUnit\\');
     }
 
+    /**
+     * @return bool
+     */
+    public function originatesFromDebugClassLoader()
+    {
+        return isset($this->triggeringClass);
+    }
+
+    /**
+     * @return string
+     */
+    public function triggeringClass()
+    {
+        if (null === $this->triggeringClass) {
+            throw new \LogicException('Check with originatesFromDebugClassLoader() before calling this method.');
+        }
+
+        return $this->triggeringClass;
+    }
+
     /**
      * @return bool
      */
diff --git a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/ConfigurationTest.php b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/ConfigurationTest.php
index 5d36a43bff54f..3c26d82788281 100644
--- a/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/ConfigurationTest.php
+++ b/src/Symfony/Bridge/PhpUnit/Tests/DeprecationErrorHandler/ConfigurationTest.php
@@ -15,6 +15,7 @@
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\Configuration;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\Deprecation;
 use Symfony\Bridge\PhpUnit\DeprecationErrorHandler\DeprecationGroup;
+use Symfony\Component\ErrorHandler\DebugClassLoader;
 
 class ConfigurationTest extends TestCase
 {
@@ -365,6 +366,43 @@ public function testExistingBaselineAndGeneration()
         $this->assertEquals(json_encode($expected_baseline, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES), file_get_contents($filename));
     }
 
+    public function testBaselineGenerationWithDeprecationTriggeredByDebugClassLoader()
+    {
+        $filename = $this->createFile();
+        $configuration = Configuration::fromUrlEncodedString('generateBaseline=true&baselineFile='.urlencode($filename));
+
+        $trace = debug_backtrace();
+        $this->assertTrue($configuration->isBaselineDeprecation(new Deprecation('Regular deprecation', $trace, '')));
+
+        $trace[2] = [
+            'class' => DebugClassLoader::class,
+            'function' => 'testBaselineGenerationWithDeprecationTriggeredByDebugClassLoader',
+            'args' => [self::class]
+        ];
+
+        $deprecation = new Deprecation('Deprecation by debug class loader', $trace, '');
+
+        $this->assertTrue($deprecation->originatesFromDebugClassLoader());
+
+        $this->assertTrue($configuration->isBaselineDeprecation($deprecation));
+
+        $configuration->writeBaseline();
+        $this->assertEquals($filename, $configuration->getBaselineFile());
+        $expected_baseline = [
+            [
+                'location' => 'Symfony\Bridge\PhpUnit\Tests\DeprecationErrorHandler\ConfigurationTest::runTest',
+                'message' => 'Regular deprecation',
+                'count' => 1,
+            ],
+            [
+                'location' => self::class,
+                'message' => 'Deprecation by debug class loader',
+                'count' => 1,
+            ],
+        ];
+        $this->assertEquals(json_encode($expected_baseline, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES), file_get_contents($filename));
+    }
+
     public function testBaselineArgumentException()
     {
         $this->expectException(\InvalidArgumentException::class);