diff --git a/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php b/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
index 800fb44c024..2e9a37cd4f8 100644
--- a/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
+++ b/rules/Php84/Rector/Param/ExplicitNullableParamTypeRector.php
@@ -6,7 +6,6 @@ namespace Rector\Php84\Rector\Param;
 use PhpParser\Node;
 use PhpParser\Node\Expr\ConstFetch;
 use PhpParser\Node\Param;
-use PHPStan\Type\NullType;
 use PHPStan\Type\TypeCombinator;
 use Rector\PhpParser\Node\Value\ValueResolver;
 use Rector\PHPStanStaticTypeMapper\Enum\TypeKind;
@@ -62,11 +61,7 @@ CODE_SAMPLE
             return null;
         }
         $nodeType = $this->staticTypeMapper->mapPhpParserNodePHPStanType($node->type);
-        if ($nodeType instanceof NullType) {
-            return null;
-        }
-        $removedNullNodeType = TypeCombinator::removeNull($nodeType);
-        if (!$nodeType->equals($removedNullNodeType)) {
+        if (TypeCombinator::containsNull($nodeType)) {
             return null;
         }
         $newNodeType = TypeCombinator::addNull($nodeType);
diff --git a/src/Application/VersionResolver.php b/src/Application/VersionResolver.php
index 2fde9886c46..92f2e3a763e 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 = 'cdde425c2224a1357d70d6784936fe47fe3ffee0';
+    public const PACKAGE_VERSION = 'd1ed5f03202cb9325f861ac7b8c1976173b45826';
     /**
      * @api
      * @var string
      */
-    public const RELEASE_DATE = '2024-03-15 20:22:53';
+    public const RELEASE_DATE = '2024-03-16 08:26:52';
     /**
      * @var int
      */