# 1 Rules Overview
## ParserFactoryRector
Upgrade ParserFactory `create()` method
- class: [`Rector\PhpParser\Rector\MethodCall\ParserFactoryRector`](../src/Rector/MethodCall/ParserFactoryRector.php)
```diff
use PhpParser\ParserFactory;
$factory = new ParserFactory;
-$parser = $factory->create(ParserFactory::PREFER_PHP7);
+$parser = $factory->createForNewestSupportedVersion();
```
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