diff --git a/composer.json b/composer.json
index 62295dc1..0b454af4 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         "php": "^8.0 || ^7.4",
         "ext-json": "*",
         "ext-tokenizer": "*",
-        "nikic/php-parser": "^5.0 || ^4.0",
+        "nikic/php-parser": "^4.0",
         "symfony/console": "^7.0 || ^6.0 || ^5.0 || ^4.0 || ^3.4",
         "symfony/var-dumper": "^7.0 || ^6.0 || ^5.0 || ^4.0 || ^3.4"
     },
diff --git a/src/CodeCleaner/ReturnTypePass.php b/src/CodeCleaner/ReturnTypePass.php
index c9894fbd..9e170144 100644
--- a/src/CodeCleaner/ReturnTypePass.php
+++ b/src/CodeCleaner/ReturnTypePass.php
@@ -15,6 +15,7 @@
 use PhpParser\Node\Expr\Closure;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Identifier;
+use PhpParser\Node\Name;
 use PhpParser\Node\NullableType;
 use PhpParser\Node\Stmt\Function_;
 use PhpParser\Node\Stmt\Return_;
@@ -108,6 +109,10 @@ private function typeName(Node $node): string
             return \strtolower($node->name);
         }
 
+        if ($node instanceof Name) {
+            return \strtolower($node->name);
+        }
+
         throw new \InvalidArgumentException('Unable to find type name');
     }
 }