diff --git a/composer.json b/composer.json
index 469c30715f775..f6d846858b15e 100644
--- a/composer.json
+++ b/composer.json
@@ -134,6 +134,7 @@
         "masterminds/html5": "^2.6",
         "monolog/monolog": "^1.25.1|^2",
         "nyholm/psr7": "^1.0",
+        "nikic/php-parser": "^4.13",
         "pda/pheanstalk": "^4.0",
         "php-http/httplug": "^1.0|^2.0",
         "php-http/message-factory": "^1.0",
diff --git a/phpunit b/phpunit
index 3ab931750e179..3811e2b50f632 100755
--- a/phpunit
+++ b/phpunit
@@ -23,4 +23,5 @@ if (getcwd() === realpath(__DIR__.'/src/Symfony/Bridge/PhpUnit')) {
     putenv('SYMFONY_DEPRECATIONS_HELPER=disabled');
 }
 putenv('SYMFONY_PHPUNIT_DIR='.__DIR__.'/.phpunit');
+putenv('SYMFONY_PHPUNIT_REQUIRE=nikic/php-parser:^4.13');
 require __DIR__.'/vendor/symfony/phpunit-bridge/bin/simple-phpunit';