diff --git a/core/tests/Drupal/Tests/Listeners/DeprecationListener.php b/core/tests/Drupal/Tests/Listeners/DeprecationListener.php
index 80b3d31..4185400 100644
--- a/core/tests/Drupal/Tests/Listeners/DeprecationListener.php
+++ b/core/tests/Drupal/Tests/Listeners/DeprecationListener.php
@@ -2,6 +2,9 @@
 
 namespace Drupal\Tests\Listeners;
 
+use PHPUnit\Framework\BaseTestListener;
+use PHPUnit\Framework\Test;
+
 /**
  * Removes deprecations that we are yet to fix.
  *
@@ -9,12 +12,12 @@
  *   This class will be removed once all the deprecation notices have been
  *   fixed.
  */
-class DeprecationListener extends \PHPUnit_Framework_BaseTestListener {
+class DeprecationListener extends BaseTestListener {
 
   /**
    * {@inheritdoc}
    */
-  public function endTest(\PHPUnit_Framework_Test $test, $time) {
+  public function endTest(Test $test, $time) {
     // Need to edit the file of deprecations.
     if ($file = getenv('SYMFONY_DEPRECATIONS_SERIALIZE')) {
       $deprecations = file_get_contents($file);
diff --git a/core/tests/Drupal/Tests/Listeners/DrupalComponentTestListener.php b/core/tests/Drupal/Tests/Listeners/DrupalComponentTestListener.php
index c349677..2481a84 100644
--- a/core/tests/Drupal/Tests/Listeners/DrupalComponentTestListener.php
+++ b/core/tests/Drupal/Tests/Listeners/DrupalComponentTestListener.php
@@ -5,7 +5,10 @@
 use Drupal\KernelTests\KernelTestBase;;
 use Drupal\Tests\BrowserTestBase;;
 use Drupal\Tests\UnitTestCase;
+use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\BaseTestListener;
+use PHPUnit\Framework\Test;
+
 
 /**
  * Ensures that no component tests are extending a core test base class.
@@ -15,10 +18,10 @@ class DrupalComponentTestListener extends BaseTestListener {
   /**
    * {@inheritdoc}
    */
-  public function endTest(\PHPUnit_Framework_Test $test, $time) {
+  public function endTest(Test $test, $time) {
     if (substr($test->toString(), 0, 22) == 'Drupal\Tests\Component') {
       if ($test instanceof BrowserTestBase || $test instanceof KernelTestBase || $test instanceof UnitTestCase) {
-        $error = new \PHPUnit_Framework_AssertionFailedError('Component tests should not extend a core test base class.');
+        $error = new AssertionFailedError('Component tests should not extend a core test base class.');
         $test->getTestResultObject()->addFailure($test, $error, $time);
       }
     }
diff --git a/core/tests/Drupal/Tests/Listeners/DrupalStandardsListener.php b/core/tests/Drupal/Tests/Listeners/DrupalStandardsListener.php
index fd15f82..8e6692d 100644
--- a/core/tests/Drupal/Tests/Listeners/DrupalStandardsListener.php
+++ b/core/tests/Drupal/Tests/Listeners/DrupalStandardsListener.php
@@ -2,8 +2,11 @@
 
 namespace Drupal\Tests\Listeners;
 
+use PHPUnit\Framework\AssertionFailedError;
 use PHPUnit\Framework\BaseTestListener;
+use PHPUnit\Framework\Test;
 use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\TestSuite;
 
 /**
  * Listens for PHPUnit tests and fails those with invalid coverage annotations.
@@ -24,7 +27,7 @@ class DrupalStandardsListener extends BaseTestListener {
   protected function fail(TestCase $test, $message) {
     // Add the report to the test's results.
     $message .= ': ' . get_class($test) . '::' . $test->getName();
-    $fail = new \PHPUnit_Framework_AssertionFailedError($message);
+    $fail = new AssertionFailedError($message);
     $result = $test->getTestResultObject();
     $result->addFailure($test, $fail, 0);
   }
@@ -153,14 +156,14 @@ public function checkValidCoversForTest(TestCase $test) {
    *
    * @see http://symfony.com/doc/current/components/phpunit_bridge.html#mark-tests-as-legacy
    */
-  public function endTest(\PHPUnit_Framework_Test $test, $time) {
-    // \PHPUnit_Framework_Test does not have any useful methods of its own for
+  public function endTest(Test $test, $time) {
+    // \PHPUnit\Framework\Test does not have any useful methods of its own for
     // our purpose, so we have to distinguish between the different known
     // subclasses.
     if ($test instanceof TestCase) {
       $this->checkValidCoversForTest($test);
     }
-    elseif ($test instanceof \PHPUnit_Framework_TestSuite) {
+    elseif ($test instanceof TestSuite) {
       foreach ($test->getGroupDetails() as $tests) {
         foreach ($tests as $test) {
           $this->endTest($test, $time);