diff --git a/rector.php b/rector.php
new file mode 100644
index 00000000..3069da26
--- /dev/null
+++ b/rector.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+use Rector\Core\Configuration\Option;
+use Rector\Set\ValueObject\SetList;
+use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
+
+return static function (ContainerConfigurator $containerConfigurator): void {
+    $parameters = $containerConfigurator->parameters();
+
+    $parameters->set(Option::AUTO_IMPORT_NAMES, true);
+
+    $parameters->set(Option::SETS, [
+        SetList::ACTION_INJECTION_TO_CONSTRUCTOR_INJECTION,
+        SetList::ARRAY_STR_FUNCTIONS_TO_STATIC_CALL,
+        SetList::CODE_QUALITY,
+        SetList::PHP_53,
+        SetList::PHP_54,
+        SetList::PHP_56,
+        SetList::PHP_70,
+        SetList::PHP_71,
+        SetList::PHP_72,
+        SetList::PHP_73,
+        SetList::PHPSTAN,
+        SetList::PHPUNIT_CODE_QUALITY,
+        SetList::SOLID,
+    ]);
+
+    $parameters->set(Option::PATHS, [__DIR__.'/src', __DIR__.'/tests']);
+};
diff --git a/rector.yaml b/rector.yaml
deleted file mode 100644
index bf3cd023..00000000
--- a/rector.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-# rector.yaml
-parameters:
-    sets:
-        - 'action-injection-to-constructor-injection'
-        - 'array-str-functions-to-static-call'
-        - 'phpstan'
-        - 'phpunit-code-quality'
-        - 'solid'
-        - 'doctrine-code-quality'
-        - 'code-quality'
-        - 'php53'
-        - 'php54'
-        - 'php55'
-        - 'php56'
-        - 'php70'
-        - 'php71'
-        - 'php72'
-        - 'php73'
diff --git a/src/Concerns/TestCase.php b/src/Concerns/TestCase.php
index 6c1d98ce..58d17059 100644
--- a/src/Concerns/TestCase.php
+++ b/src/Concerns/TestCase.php
@@ -9,6 +9,7 @@ use Pest\Expectation;
 use Pest\Support\ExceptionTrace;
 use Pest\TestSuite;
 use PHPUnit\Util\Test;
+use Throwable;
 
 /**
  * To avoid inheritance conflicts, all the fields related
@@ -143,7 +144,7 @@ trait TestCase
      *
      * @return mixed
      *
-     * @throws \Throwable
+     * @throws Throwable
      */
     public function __test()
     {
@@ -153,7 +154,7 @@ trait TestCase
     /**
      * @return mixed
      *
-     * @throws \Throwable
+     * @throws Throwable
      */
     private function __callClosure(Closure $closure, array $arguments)
     {
diff --git a/src/Laravel/Commands/PestInstallCommand.php b/src/Laravel/Commands/PestInstallCommand.php
index c5247548..b1f34a45 100644
--- a/src/Laravel/Commands/PestInstallCommand.php
+++ b/src/Laravel/Commands/PestInstallCommand.php
@@ -6,6 +6,7 @@ namespace Pest\Laravel\Commands;
 
 use Illuminate\Console\Command;
 use Illuminate\Support\Facades\File;
+use Pest\Console\Thanks;
 use Pest\Exceptions\InvalidConsoleArgument;
 use Pest\Support\Str;
 
@@ -61,7 +62,7 @@ final class PestInstallCommand extends Command
         $this->output->success('`tests/Helpers.php` created successfully.');
 
         if (!(bool) $this->option('no-interaction')) {
-            (new \Pest\Console\Thanks($this->output))();
+            (new Thanks($this->output))();
         }
     }
 
diff --git a/src/Repositories/TestRepository.php b/src/Repositories/TestRepository.php
index 09242448..cf36319e 100644
--- a/src/Repositories/TestRepository.php
+++ b/src/Repositories/TestRepository.php
@@ -11,6 +11,7 @@ use Pest\Exceptions\TestCaseClassOrTraitNotFound;
 use Pest\Factories\TestCaseFactory;
 use Pest\Support\Str;
 use Pest\TestSuite;
+use PHPUnit\Framework\TestCase;
 
 /**
  * @internal
@@ -52,7 +53,7 @@ final class TestRepository
                 if ((!is_dir($path) && $filename === $path) || (is_dir($path) && $startsWith($filename, $path))) {
                     foreach ($classOrTraits as $class) {
                         if (class_exists($class)) {
-                            if ($testCase->class !== \PHPUnit\Framework\TestCase::class) {
+                            if ($testCase->class !== TestCase::class) {
                                 throw new TestCaseAlreadyInUse($testCase->class, $class, $filename);
                             }
                             $testCase->class = $class;
diff --git a/src/Support/ExceptionTrace.php b/src/Support/ExceptionTrace.php
index 72a1d829..014b88df 100644
--- a/src/Support/ExceptionTrace.php
+++ b/src/Support/ExceptionTrace.php
@@ -20,7 +20,7 @@ final class ExceptionTrace
      *
      * @return mixed
      *
-     * @throws \Throwable
+     * @throws Throwable
      */
     public static function ensure(Closure $closure)
     {
diff --git a/src/Support/HigherOrderMessage.php b/src/Support/HigherOrderMessage.php
index 75e351b6..9f363b5a 100644
--- a/src/Support/HigherOrderMessage.php
+++ b/src/Support/HigherOrderMessage.php
@@ -77,7 +77,7 @@ final class HigherOrderMessage
             Reflection::setPropertyValue($throwable, 'line', $this->line);
 
             if ($throwable->getMessage() === self::getUndefinedMethodMessage($target, $this->methodName)) {
-                /** @var \ReflectionClass $reflection */
+                /** @var ReflectionClass $reflection */
                 $reflection = new ReflectionClass($target);
                 /* @phpstan-ignore-next-line */
                 $reflection = $reflection->getParentClass() ?: $reflection;
diff --git a/src/Support/HigherOrderTapProxy.php b/src/Support/HigherOrderTapProxy.php
index 9e9506d2..4b5664d3 100644
--- a/src/Support/HigherOrderTapProxy.php
+++ b/src/Support/HigherOrderTapProxy.php
@@ -5,6 +5,7 @@ declare(strict_types=1);
 namespace Pest\Support;
 
 use ReflectionClass;
+use Throwable;
 
 /**
  * @internal
@@ -51,12 +52,12 @@ final class HigherOrderTapProxy
         try {
             // @phpstan-ignore-next-line
             return $this->target->{$property};
-        } catch (\Throwable $throwable) {
+        } catch (Throwable $throwable) {
             Reflection::setPropertyValue($throwable, 'file', Backtrace::file());
             Reflection::setPropertyValue($throwable, 'line', Backtrace::line());
 
             if (Str::startsWith($message = $throwable->getMessage(), self::UNDEFINED_PROPERTY)) {
-                /** @var \ReflectionClass $reflection */
+                /** @var ReflectionClass $reflection */
                 $reflection = (new ReflectionClass($this->target))->getParentClass();
                 Reflection::setPropertyValue($throwable, 'message', sprintf('Undefined property %s::$%s', $reflection->getName(), $property));
             }
diff --git a/src/TestSuite.php b/src/TestSuite.php
index b9c232b2..63e58f4e 100644
--- a/src/TestSuite.php
+++ b/src/TestSuite.php
@@ -10,6 +10,7 @@ use Pest\Repositories\AfterEachRepository;
 use Pest\Repositories\BeforeAllRepository;
 use Pest\Repositories\BeforeEachRepository;
 use Pest\Repositories\TestRepository;
+use PHPUnit\Framework\TestCase;
 
 /**
  * @internal
@@ -19,7 +20,7 @@ final class TestSuite
     /**
      * Holds the current test case.
      *
-     * @var \PHPUnit\Framework\TestCase|null
+     * @var TestCase|null
      */
     public $test;