diff --git a/phpstan.neon b/phpstan.neon
index b45011c..ffe9f16 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,5 @@
 parameters:
-    level: 6
+    level: 9
     paths:
         - src
         - tests/unit
diff --git a/src/type/Type.php b/src/type/Type.php
index 3fb1340..0dee63f 100644
--- a/src/type/Type.php
+++ b/src/type/Type.php
@@ -62,6 +62,7 @@ public static function fromName(string $typeName, bool $allowsNull): self
             'void'         => new VoidType,
             'array', 'bool', 'boolean', 'double', 'float', 'int', 'integer', 'real', 'resource', 'resource (closed)', 'string' => new SimpleType($typeName, $allowsNull),
             'mixed' => new MixedType,
+            /** @phpstan-ignore argument.type */
             default => new ObjectType(TypeName::fromQualifiedName($typeName), $allowsNull),
         };
     }