diff --git a/src/Application/VersionResolver.php b/src/Application/VersionResolver.php
index 258eea8553c..dd59c169008 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 = '24fb5874905da56065ef38d9cfe9bff77cb04cac';
+    public const PACKAGE_VERSION = '51261506c37859e99fde858677031dd0d72e7bfc';
     /**
      * @api
      * @var string
      */
-    public const RELEASE_DATE = '2024-08-12 22:00:07';
+    public const RELEASE_DATE = '2024-08-12 22:03:10';
     /**
      * @var int
      */
diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/MixedTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/MixedTypeMapper.php
index 2a7eac27fbb..e446ba533dc 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/MixedTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/MixedTypeMapper.php
@@ -10,6 +10,7 @@
 use PHPStan\Type\Type;
 use Rector\Php\PhpVersionProvider;
 use Rector\PHPStanStaticTypeMapper\Contract\TypeMapperInterface;
+use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
 use Rector\ValueObject\PhpVersionFeature;
 /**
  * @implements TypeMapperInterface<MixedType>
@@ -47,6 +48,9 @@ public function mapToPhpParserNode(Type $type, string $typeKind) : ?Node
         if (!$type->isExplicitMixed()) {
             return null;
         }
+        if ($typeKind === TypeKind::UNION) {
+            return null;
+        }
         return new Identifier('mixed');
     }
 }
diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/StrictMixedTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/StrictMixedTypeMapper.php
index 961a63638a4..9539d083b82 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/StrictMixedTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/StrictMixedTypeMapper.php
@@ -8,16 +8,28 @@
 use PHPStan\PhpDocParser\Ast\Type\TypeNode;
 use PHPStan\Type\StrictMixedType;
 use PHPStan\Type\Type;
+use Rector\Php\PhpVersionProvider;
 use Rector\PHPStanStaticTypeMapper\Contract\TypeMapperInterface;
+use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
+use Rector\ValueObject\PhpVersionFeature;
 /**
  * @implements TypeMapperInterface<StrictMixedType>
  */
 final class StrictMixedTypeMapper implements TypeMapperInterface
 {
+    /**
+     * @readonly
+     * @var \Rector\Php\PhpVersionProvider
+     */
+    private $phpVersionProvider;
     /**
      * @var string
      */
     private const MIXED = 'mixed';
+    public function __construct(PhpVersionProvider $phpVersionProvider)
+    {
+        $this->phpVersionProvider = $phpVersionProvider;
+    }
     public function getNodeClass() : string
     {
         return StrictMixedType::class;
@@ -34,6 +46,12 @@ public function mapToPHPStanPhpDocTypeNode(Type $type) : TypeNode
      */
     public function mapToPhpParserNode(Type $type, string $typeKind) : ?Node
     {
+        if (!$this->phpVersionProvider->isAtLeastPhpVersion(PhpVersionFeature::MIXED_TYPE)) {
+            return null;
+        }
+        if ($typeKind === TypeKind::UNION) {
+            return null;
+        }
         return new Identifier(self::MIXED);
     }
 }
diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
index c76c7ceca2c..142ccaaf654 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/UnionTypeMapper.php
@@ -12,10 +12,8 @@
 use PhpParser\Node\NullableType;
 use PhpParser\Node\UnionType as PhpParserUnionType;
 use PHPStan\PhpDocParser\Ast\Type\TypeNode;
-use PHPStan\Type\MixedType;
 use PHPStan\Type\Type;
 use PHPStan\Type\UnionType;
-use PHPStan\Type\VoidType;
 use Rector\BetterPhpDocParser\ValueObject\Type\BracketsAwareUnionTypeNode;
 use Rector\Php\PhpVersionProvider;
 use Rector\PHPStanStaticTypeMapper\Contract\TypeMapperInterface;
@@ -158,11 +156,8 @@ private function matchPhpParserUnionType(UnionType $unionType) : ?Node
     {
         $phpParserUnionedTypes = [];
         foreach ($unionType->getTypes() as $unionedType) {
-            // void type and mixed type are not allowed in union
-            if (\in_array(\get_class($unionedType), [MixedType::class, VoidType::class], \true)) {
-                return null;
-            }
             // NullType or ConstantBooleanType with false value inside UnionType is allowed
+            // void type and mixed type are not allowed in union
             $phpParserNode = $this->phpStanStaticTypeMapper->mapToPhpParserNode($unionedType, TypeKind::UNION);
             if ($phpParserNode === null) {
                 return null;
diff --git a/src/PHPStanStaticTypeMapper/TypeMapper/VoidTypeMapper.php b/src/PHPStanStaticTypeMapper/TypeMapper/VoidTypeMapper.php
index 91e8b8dcc1f..e640706d9f0 100644
--- a/src/PHPStanStaticTypeMapper/TypeMapper/VoidTypeMapper.php
+++ b/src/PHPStanStaticTypeMapper/TypeMapper/VoidTypeMapper.php
@@ -50,7 +50,7 @@ public function mapToPhpParserNode(Type $type, string $typeKind) : ?Node
         if (!$this->phpVersionProvider->isAtLeastPhpVersion(PhpVersionFeature::VOID_TYPE)) {
             return null;
         }
-        if (\in_array($typeKind, [TypeKind::PARAM, TypeKind::PROPERTY], \true)) {
+        if (\in_array($typeKind, [TypeKind::PARAM, TypeKind::PROPERTY, TypeKind::UNION], \true)) {
             return null;
         }
         return new Identifier(self::VOID);