diff --git a/packages/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php b/packages/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
index 993f6b34b1c..81c9c6c9ff4 100644
--- a/packages/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
+++ b/packages/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
@@ -257,8 +257,14 @@ final class UnionTypeMapper implements TypeMapperInterface
                 $identifierNames[] = $type->toString();
             }
         }
+        if (!\in_array('bool', $identifierNames, \true)) {
+            return $phpParserUnionType;
+        }
+        if (!\in_array('false', $identifierNames, \true)) {
+            return $phpParserUnionType;
+        }
         foreach ($phpParserUnionType->types as $key => $type) {
-            if ($type instanceof Identifier && \in_array('bool', $identifierNames, \true) && $type->toString() === 'false') {
+            if ($type instanceof Identifier && $type->toString() === 'false') {
                 unset($phpParserUnionType->types[$key]);
                 $phpParserUnionType->types = \array_values($phpParserUnionType->types);
                 return $phpParserUnionType;
diff --git a/src/Application/VersionResolver.php b/src/Application/VersionResolver.php
index 09ff75722f4..1d9547e5e06 100644
--- a/src/Application/VersionResolver.php
+++ b/src/Application/VersionResolver.php
@@ -19,12 +19,12 @@ final class VersionResolver
      * @api
      * @var string
      */
-    public const PACKAGE_VERSION = '92d38cfba31d2a2811c19dd57810e296a725c91e';
+    public const PACKAGE_VERSION = 'bd478cc1b2fa2934e980e3d92c97a66ad7b260bd';
     /**
      * @api
      * @var string
      */
-    public const RELEASE_DATE = '2023-04-26 03:57:38';
+    public const RELEASE_DATE = '2023-04-26 04:27:01';
     /**
      * @var int
      */
diff --git a/vendor/autoload.php b/vendor/autoload.php
index 26b266e0040..937a734ce58 100644
--- a/vendor/autoload.php
+++ b/vendor/autoload.php
@@ -22,4 +22,4 @@ if (PHP_VERSION_ID < 50600) {
 
 require_once __DIR__ . '/composer/autoload_real.php';
 
-return ComposerAutoloaderInit36da454820da7bd973f9c0cf95da646d::getLoader();
+return ComposerAutoloaderInitaf71511c77a9e5e72ea77d280d03391c::getLoader();
diff --git a/vendor/composer/autoload_real.php b/vendor/composer/autoload_real.php
index 608113aba36..e7892bff4c5 100644
--- a/vendor/composer/autoload_real.php
+++ b/vendor/composer/autoload_real.php
@@ -2,7 +2,7 @@
 
 // autoload_real.php @generated by Composer
 
-class ComposerAutoloaderInit36da454820da7bd973f9c0cf95da646d
+class ComposerAutoloaderInitaf71511c77a9e5e72ea77d280d03391c
 {
     private static $loader;
 
@@ -22,17 +22,17 @@ class ComposerAutoloaderInit36da454820da7bd973f9c0cf95da646d
             return self::$loader;
         }
 
-        spl_autoload_register(array('ComposerAutoloaderInit36da454820da7bd973f9c0cf95da646d', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInitaf71511c77a9e5e72ea77d280d03391c', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
-        spl_autoload_unregister(array('ComposerAutoloaderInit36da454820da7bd973f9c0cf95da646d', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInitaf71511c77a9e5e72ea77d280d03391c', 'loadClassLoader'));
 
         require __DIR__ . '/autoload_static.php';
-        call_user_func(\Composer\Autoload\ComposerStaticInit36da454820da7bd973f9c0cf95da646d::getInitializer($loader));
+        call_user_func(\Composer\Autoload\ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c::getInitializer($loader));
 
         $loader->setClassMapAuthoritative(true);
         $loader->register(true);
 
-        $filesToLoad = \Composer\Autoload\ComposerStaticInit36da454820da7bd973f9c0cf95da646d::$files;
+        $filesToLoad = \Composer\Autoload\ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c::$files;
         $requireFile = \Closure::bind(static function ($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 930b748318d..62eb5705d35 100644
--- a/vendor/composer/autoload_static.php
+++ b/vendor/composer/autoload_static.php
@@ -4,7 +4,7 @@
 
 namespace Composer\Autoload;
 
-class ComposerStaticInit36da454820da7bd973f9c0cf95da646d
+class ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c
 {
     public static $files = array (
         'ad155f8f1cf0d418fe49e248db8c661b' => __DIR__ . '/..' . '/react/promise/src/functions_include.php',
@@ -3150,9 +3150,9 @@ class ComposerStaticInit36da454820da7bd973f9c0cf95da646d
     public static function getInitializer(ClassLoader $loader)
     {
         return \Closure::bind(function () use ($loader) {
-            $loader->prefixLengthsPsr4 = ComposerStaticInit36da454820da7bd973f9c0cf95da646d::$prefixLengthsPsr4;
-            $loader->prefixDirsPsr4 = ComposerStaticInit36da454820da7bd973f9c0cf95da646d::$prefixDirsPsr4;
-            $loader->classMap = ComposerStaticInit36da454820da7bd973f9c0cf95da646d::$classMap;
+            $loader->prefixLengthsPsr4 = ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c::$prefixDirsPsr4;
+            $loader->classMap = ComposerStaticInitaf71511c77a9e5e72ea77d280d03391c::$classMap;
 
         }, null, ClassLoader::class);
     }