diff --git a/Tests/Translation/Extractor/File/BasePhpFileExtractorTest.php b/Tests/Translation/Extractor/File/BasePhpFileExtractorTest.php
index 56fe06a2..07343e57 100644
--- a/Tests/Translation/Extractor/File/BasePhpFileExtractorTest.php
+++ b/Tests/Translation/Extractor/File/BasePhpFileExtractorTest.php
@@ -38,7 +38,7 @@ final protected function extract($file, ?FileVisitorInterface $extractor = null)
     {
         $fileRealPath = __DIR__ . '/Fixture/' . $file;
         if (! is_file($fileRealPath)) {
-            throw new RuntimeException(sprintf('The file "%s" does not exist.', $fileRealPath));
+            throw new \RuntimeException(sprintf('The file "%s" does not exist.', $fileRealPath));
         }
 
         if ($extractor === null) {
@@ -48,7 +48,7 @@ final protected function extract($file, ?FileVisitorInterface $extractor = null)
         $lexer = new Lexer();
         if (class_exists(ParserFactory::class)) {
             $factory = new ParserFactory();
-            $parser  = $factory->create(ParserFactory::PREFER_PHP7, $lexer);
+            $parser  = $factory->createForNewestSupportedVersion();
         } else {
             $parser = new Parser($lexer);
         }
diff --git a/Tests/Translation/Extractor/File/Fixture/MyAuthException.php b/Tests/Translation/Extractor/File/Fixture/MyAuthException.php
index 5caaff3c..273d45b4 100644
--- a/Tests/Translation/Extractor/File/Fixture/MyAuthException.php
+++ b/Tests/Translation/Extractor/File/Fixture/MyAuthException.php
@@ -26,7 +26,7 @@ class MyAuthException extends AuthenticationException
 {
     private $foo;
 
-    public function getMessageKey()
+    public function getMessageKey(): string
     {
         if (! empty($this->foo)) {
             /** @Desc("%foo% is invalid.") */
diff --git a/Tests/Translation/Extractor/File/TranslationContainerExtractorTest.php b/Tests/Translation/Extractor/File/TranslationContainerExtractorTest.php
index b2dbc221..2c0e2e07 100644
--- a/Tests/Translation/Extractor/File/TranslationContainerExtractorTest.php
+++ b/Tests/Translation/Extractor/File/TranslationContainerExtractorTest.php
@@ -62,7 +62,7 @@ private function extract($file, ?TranslationContainerExtractor $extractor = null
         $lexer = new Lexer();
         if (class_exists(ParserFactory::class)) {
             $factory = new ParserFactory();
-            $parser  = $factory->create(ParserFactory::PREFER_PHP7, $lexer);
+            $parser  = $factory->createForNewestSupportedVersion();
         } else {
             $parser = new Parser($lexer);
         }
diff --git a/Tests/Translation/Extractor/File/ValidationExtractorTest.php b/Tests/Translation/Extractor/File/ValidationExtractorTest.php
index 18136c3f..23cba5d1 100644
--- a/Tests/Translation/Extractor/File/ValidationExtractorTest.php
+++ b/Tests/Translation/Extractor/File/ValidationExtractorTest.php
@@ -62,7 +62,7 @@ private function extract($file, ?ValidationExtractor $extractor = null)
         $lexer = new Lexer();
         if (class_exists(ParserFactory::class)) {
             $factory = new ParserFactory();
-            $parser  = $factory->create(ParserFactory::PREFER_PHP7, $lexer);
+            $parser  = $factory->createForNewestSupportedVersion();
         } else {
             $parser = new Parser($lexer);
         }
diff --git a/Translation/Extractor/File/AuthenticationMessagesExtractor.php b/Translation/Extractor/File/AuthenticationMessagesExtractor.php
index 4621fd03..11ce7c48 100644
--- a/Translation/Extractor/File/AuthenticationMessagesExtractor.php
+++ b/Translation/Extractor/File/AuthenticationMessagesExtractor.php
@@ -116,7 +116,7 @@ public function enterNode(Node $node)
     {
         if ($node instanceof Node\Stmt\Namespace_) {
             if (isset($node->name)) {
-                $this->namespace = implode('\\', $node->name->parts);
+                $this->namespace = $node->name->name;
             }
 
             return;
diff --git a/Translation/Extractor/File/FormExtractor.php b/Translation/Extractor/File/FormExtractor.php
index 93bb2fed..7e553abb 100644
--- a/Translation/Extractor/File/FormExtractor.php
+++ b/Translation/Extractor/File/FormExtractor.php
@@ -28,6 +28,7 @@
 use JMS\TranslationBundle\Logger\LoggerAwareInterface;
 use JMS\TranslationBundle\Model\Message;
 use JMS\TranslationBundle\Model\MessageCatalogue;
+use JMS\TranslationBundle\Model\SourceInterface;
 use JMS\TranslationBundle\Translation\Extractor\FileVisitorInterface;
 use JMS\TranslationBundle\Translation\FileSourceFactory;
 use PhpParser\Comment\Doc;
@@ -76,7 +77,7 @@ class FormExtractor implements FileVisitorInterface, LoggerAwareInterface, NodeV
     private $defaultDomain;
 
     /**
-     * @var string
+     * @var array
      */
     private $defaultDomainMessages;
 
@@ -203,7 +204,7 @@ public function getDomain(Node $node)
     protected function parseEmptyValueNode(Node $item, $domain)
     {
         // Skip empty_value when false
-        if ($item->value instanceof Node\Expr\ConstFetch && $item->value->name instanceof Node\Name && 'false' === $item->value->name->parts[0]) {
+        if ($item->value instanceof Node\Expr\ConstFetch && $item->value->name instanceof Node\Name && 'false' === $item->value->name->getFirst()) {
             return true;
         }
 
@@ -407,6 +408,10 @@ private function parseItem($item, $domain = null)
             $docComment = $item->value->getDocComment();
         }
 
+        if (!$docComment) {
+            $docComment = $item->getDocComment();
+        }
+
         $docComment = is_object($docComment) ? $docComment->getText() : null;
 
         if ($docComment) {
@@ -427,7 +432,7 @@ private function parseItem($item, $domain = null)
         // check if the value is explicitly set to false => e.g. for FormField that should be rendered without label
         $ignore = $ignore || !$item->value instanceof Node\Scalar\String_ || $item->value->value === false;
 
-        if (!$item->value instanceof Node\Scalar\String_ && !$item->value instanceof Node\Scalar\LNumber) {
+        if (!$item->value instanceof Node\Scalar\String_ && !$item->value instanceof Node\Scalar\Int_) {
             if ($ignore) {
                 return;
             }
@@ -459,7 +464,7 @@ private function parseItem($item, $domain = null)
 
     /**
      * @param string $id
-     * @param string $source
+     * @param SourceInterface $source
      * @param string|null $domain
      * @param string|null $desc
      * @param string|null $meaning
diff --git a/Translation/Extractor/File/TranslationContainerExtractor.php b/Translation/Extractor/File/TranslationContainerExtractor.php
index b2044883..c62278ef 100644
--- a/Translation/Extractor/File/TranslationContainerExtractor.php
+++ b/Translation/Extractor/File/TranslationContainerExtractor.php
@@ -74,7 +74,7 @@ public function enterNode(Node $node)
     {
         if ($node instanceof Node\Stmt\Namespace_) {
             if (isset($node->name)) {
-                $this->namespace = implode('\\', $node->name->parts);
+                $this->namespace = $node->name->name;
             }
             $this->useStatements = [];
 
@@ -83,7 +83,7 @@ public function enterNode(Node $node)
 
         if ($node instanceof Node\Stmt\UseUse) {
             $nodeAliasName = is_string($node->alias) ? $node->alias : $node->getAlias()->name;
-            $this->useStatements[$nodeAliasName] = implode('\\', $node->name->parts);
+            $this->useStatements[$nodeAliasName] = $node->name->name;
 
             return;
         }
@@ -94,7 +94,7 @@ public function enterNode(Node $node)
 
         $isContainer = false;
         foreach ($node->implements as $interface) {
-            $name = implode('\\', $interface->parts);
+            $name = $interface->name;
             if (isset($this->useStatements[$name])) {
                 $name = $this->useStatements[$name];
             }
diff --git a/Translation/Extractor/File/ValidationExtractor.php b/Translation/Extractor/File/ValidationExtractor.php
index 9b1a1530..0581da6b 100644
--- a/Translation/Extractor/File/ValidationExtractor.php
+++ b/Translation/Extractor/File/ValidationExtractor.php
@@ -84,7 +84,7 @@ public function enterNode(Node $node)
     {
         if ($node instanceof Node\Stmt\Namespace_) {
             if (isset($node->name)) {
-                $this->namespace = implode('\\', $node->name->parts);
+                $this->namespace = $node->name->name;
             }
 
             return;
diff --git a/Translation/Extractor/FileExtractor.php b/Translation/Extractor/FileExtractor.php
index 34c5e2a5..91ab49ed 100644
--- a/Translation/Extractor/FileExtractor.php
+++ b/Translation/Extractor/FileExtractor.php
@@ -107,7 +107,7 @@ public function __construct(Environment $twig, LoggerInterface $logger, array $v
         $lexer = new Lexer();
         if (class_exists(ParserFactory::class)) {
             $factory = new ParserFactory();
-            $this->phpParser = $factory->create(ParserFactory::PREFER_PHP7, $lexer);
+            $this->phpParser = $factory->createForNewestSupportedVersion();
         } else {
             $this->phpParser = new Parser($lexer);
         }
diff --git a/composer.json b/composer.json
index 350dafef..2e7f0de0 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     ],
     "require": {
         "php": "^7.4 || ^8.0",
-        "nikic/php-parser": "^4.9",
+        "nikic/php-parser": "^5",
         "symfony/console": "^4.3 || ^5.4 || ^6.0",
         "symfony/expression-language": "^4.3 || ^5.4 || ^6.0",
         "symfony/framework-bundle": "^4.3 || ^5.4 || ^6.0",