diff --git a/docs/rector_rules_overview.md b/docs/rector_rules_overview.md
index d68eb5ef092..3ce4d5019dc 100644
--- a/docs/rector_rules_overview.md
+++ b/docs/rector_rules_overview.md
@@ -1,4 +1,4 @@
-# 516 Rules Overview
+# 517 Rules Overview
 
 <br>
 
@@ -78,7 +78,7 @@
 
 - [Php80](#php80) (18)
 
-- [Php81](#php81) (8)
+- [Php81](#php81) (9)
 
 - [PhpSpecToPHPUnit](#phpspectophpunit) (7)
 
@@ -379,7 +379,7 @@ return static function (ContainerConfigurator $containerConfigurator): void {
 
 ### AbsolutizeRequireAndIncludePathRector
 
-include/require to absolute path. This Rector might introduce backwards incompatible code, when the include/require being changed depends on the current working directory.
+include/require to absolute path. This Rector might introduce backwards incompatible code, when the include/require beeing changed depends on the current working directory.
 
 - class: [`Rector\CodeQuality\Rector\Include_\AbsolutizeRequireAndIncludePathRector`](../rules/CodeQuality/Rector/Include_/AbsolutizeRequireAndIncludePathRector.php)
 
@@ -434,7 +434,7 @@ Split 2 assigns ands to separate line
 
 ### ArrayKeyExistsTernaryThenValueToCoalescingRector
 
-Change `array_key_exists()` ternary to coalescing
+Change `array_key_exists()` ternary to coalesing
 
 - class: [`Rector\CodeQuality\Rector\Ternary\ArrayKeyExistsTernaryThenValueToCoalescingRector`](../rules/CodeQuality/Rector/Ternary/ArrayKeyExistsTernaryThenValueToCoalescingRector.php)
 
@@ -1261,7 +1261,7 @@ Simplify array_search to in_array
 
 ### SimplifyBoolIdenticalTrueRector
 
-Simplify bool value compare to true or false
+Symplify bool value compare to true or false
 
 - class: [`Rector\CodeQuality\Rector\Identical\SimplifyBoolIdenticalTrueRector`](../rules/CodeQuality/Rector/Identical/SimplifyBoolIdenticalTrueRector.php)
 
@@ -3349,7 +3349,7 @@ Remove unused parent call with no parent class
 
 ### RemovePhpVersionIdCheckRector
 
-Remove unneeded PHP_VERSION_ID check
+Remove unneded PHP_VERSION_ID check
 
 :wrench: **configure it!**
 
@@ -5513,7 +5513,7 @@ change instanceof Object to is_resource
 
 ### DowngradePropertyPromotionRector
 
-Change constructor property promotion to property assign
+Change constructor property promotion to property asssign
 
 - class: [`Rector\DowngradePhp80\Rector\Class_\DowngradePropertyPromotionRector`](../rules/DowngradePhp80/Rector/Class_/DowngradePropertyPromotionRector.php)
 
@@ -8524,6 +8524,25 @@ Replace property declaration of new state with direct new
 
 <br>
 
+### NullToStrictStringFuncCallArgRector
+
+Change null to strict string defined function call args
+
+- class: [`Rector\Php81\Rector\FuncCall\NullToStrictStringFuncCallArgRector`](../rules/Php81/Rector/FuncCall/NullToStrictStringFuncCallArgRector.php)
+
+```diff
+ class SomeClass
+ {
+     public function run()
+     {
+-        preg_split("#a#", null);
++        preg_split("#a#", '');
+     }
+ }
+```
+
+<br>
+
 ### Php81ResourceReturnToObjectRector
 
 Change `is_resource()` to instanceof Object
diff --git a/src/Application/VersionResolver.php b/src/Application/VersionResolver.php
index 1ac0319865c..bfc5e017dd3 100644
--- a/src/Application/VersionResolver.php
+++ b/src/Application/VersionResolver.php
@@ -16,11 +16,11 @@ final class VersionResolver
     /**
      * @var string
      */
-    public const PACKAGE_VERSION = '90cb1ad36fac313a61c5154065c82588dcfbccc1';
+    public const PACKAGE_VERSION = '4ac5dd64203365def3131ff226f65695a37d1b78';
     /**
      * @var string
      */
-    public const RELEASE_DATE = '2022-01-16 01:38:39';
+    public const RELEASE_DATE = '2022-01-16 08:46:29';
     public static function resolvePackageVersion() : string
     {
         $process = new \RectorPrefix20220116\Symfony\Component\Process\Process(['git', 'log', '--pretty="%H"', '-n1', 'HEAD'], __DIR__);
diff --git a/vendor/autoload.php b/vendor/autoload.php
index 8c6af6088b6..36827c07b1f 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -4,4 +4,4 @@
 
 require_once __DIR__ . '/composer/autoload_real.php';
 
-return ComposerAutoloaderInitea010173458446b1008dead1ac5020ac::getLoader();
+return ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42::getLoader();
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index 1594cf27efe..2971bbf32ee 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -2,7 +2,7 @@
 
 // autoload_real.php @generated by Composer
 
-class ComposerAutoloaderInitea010173458446b1008dead1ac5020ac
+class ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42
 {
     private static $loader;
 
@@ -22,15 +22,15 @@ class ComposerAutoloaderInitea010173458446b1008dead1ac5020ac
             return self::$loader;
         }
 
-        spl_autoload_register(array('ComposerAutoloaderInitea010173458446b1008dead1ac5020ac', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
-        spl_autoload_unregister(array('ComposerAutoloaderInitea010173458446b1008dead1ac5020ac', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
         if ($useStaticLoader) {
             require __DIR__ . '/autoload_static.php';
 
-            call_user_func(\Composer\Autoload\ComposerStaticInitea010173458446b1008dead1ac5020ac::getInitializer($loader));
+            call_user_func(\Composer\Autoload\ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42::getInitializer($loader));
         } else {
             $classMap = require __DIR__ . '/autoload_classmap.php';
             if ($classMap) {
@@ -42,12 +42,12 @@ class ComposerAutoloaderInitea010173458446b1008dead1ac5020ac
         $loader->register(true);
 
         if ($useStaticLoader) {
-            $includeFiles = Composer\Autoload\ComposerStaticInitea010173458446b1008dead1ac5020ac::$files;
+            $includeFiles = Composer\Autoload\ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42::$files;
         } else {
             $includeFiles = require __DIR__ . '/autoload_files.php';
         }
         foreach ($includeFiles as $fileIdentifier => $file) {
-            composerRequireea010173458446b1008dead1ac5020ac($fileIdentifier, $file);
+            composerRequire45f44610df1bf6e705e2bea6b889fc42($fileIdentifier, $file);
         }
 
         return $loader;
@@ -59,7 +59,7 @@ class ComposerAutoloaderInitea010173458446b1008dead1ac5020ac
  * @param string $file
  * @return void
  */
-function composerRequireea010173458446b1008dead1ac5020ac($fileIdentifier, $file)
+function composerRequire45f44610df1bf6e705e2bea6b889fc42($fileIdentifier, $file)
 {
     if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
         $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
diff --git a/vendor/composer/autoload_static.php b/vendor/composer/autoload_static.php
index adc09b5c01e..e7e8bbc1359 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -4,7 +4,7 @@
 
 namespace Composer\Autoload;
 
-class ComposerStaticInitea010173458446b1008dead1ac5020ac
+class ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42
 {
     public static $files = array (
         '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => __DIR__ . '/..' . '/symfony/polyfill-mbstring/bootstrap.php',
@@ -3865,9 +3865,9 @@ class ComposerStaticInitea010173458446b1008dead1ac5020ac
     public static function getInitializer(ClassLoader $loader)
     {
         return \Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInitea010173458446b1008dead1ac5020ac::$prefixLengthsPsr4;
-            $loader->prefixDirsPsr4 = ComposerStaticInitea010173458446b1008dead1ac5020ac::$prefixDirsPsr4;
-            $loader->classMap = ComposerStaticInitea010173458446b1008dead1ac5020ac::$classMap;
+            $loader->prefixLengthsPsr4 = ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42::$prefixDirsPsr4;
+            $loader->classMap = ComposerStaticInit45f44610df1bf6e705e2bea6b889fc42::$classMap;
 
         }, null, ClassLoader::class);
     }
diff --git a/vendor/scoper-autoload.php b/vendor/scoper-autoload.php
index e62391a3ba7..47176eaedd4 100644
--- a/vendor/scoper-autoload.php
+++ b/vendor/scoper-autoload.php
@@ -9,8 +9,8 @@ $loader = require_once __DIR__.'/autoload.php';
 if (!class_exists('AutoloadIncluder', false) && !interface_exists('AutoloadIncluder', false) && !trait_exists('AutoloadIncluder', false)) {
     spl_autoload_call('RectorPrefix20220116\AutoloadIncluder');
 }
-if (!class_exists('ComposerAutoloaderInitea010173458446b1008dead1ac5020ac', false) && !interface_exists('ComposerAutoloaderInitea010173458446b1008dead1ac5020ac', false) && !trait_exists('ComposerAutoloaderInitea010173458446b1008dead1ac5020ac', false)) {
-    spl_autoload_call('RectorPrefix20220116\ComposerAutoloaderInitea010173458446b1008dead1ac5020ac');
+if (!class_exists('ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42', false) && !interface_exists('ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42', false) && !trait_exists('ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42', false)) {
+    spl_autoload_call('RectorPrefix20220116\ComposerAutoloaderInit45f44610df1bf6e705e2bea6b889fc42');
 }
 if (!class_exists('Helmich\TypoScriptParser\Parser\AST\Statement', false) && !interface_exists('Helmich\TypoScriptParser\Parser\AST\Statement', false) && !trait_exists('Helmich\TypoScriptParser\Parser\AST\Statement', false)) {
     spl_autoload_call('RectorPrefix20220116\Helmich\TypoScriptParser\Parser\AST\Statement');
@@ -71,9 +71,9 @@ if (!function_exists('print_node')) {
         return \RectorPrefix20220116\print_node(...func_get_args());
     }
 }
-if (!function_exists('composerRequireea010173458446b1008dead1ac5020ac')) {
-    function composerRequireea010173458446b1008dead1ac5020ac() {
-        return \RectorPrefix20220116\composerRequireea010173458446b1008dead1ac5020ac(...func_get_args());
+if (!function_exists('composerRequire45f44610df1bf6e705e2bea6b889fc42')) {
+    function composerRequire45f44610df1bf6e705e2bea6b889fc42() {
+        return \RectorPrefix20220116\composerRequire45f44610df1bf6e705e2bea6b889fc42(...func_get_args());
     }
 }
 if (!function_exists('scanPath')) {