diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
index ea3fffd9..3407d643 100644
--- a/.php-cs-fixer.php
+++ b/.php-cs-fixer.php
@@ -10,10 +10,11 @@
 
 $config = new PhpCsFixer\Config();
 return $config
+    ->setParallelConfig(PhpCsFixer\Runner\Parallel\ParallelConfigFactory::detect())
     ->setRiskyAllowed(true)
     ->setRules(array(
         '@PSR2'                  => true,
-        '@PHP70Migration:risky'  => true,
+        '@PHP7x0Migration:risky' => true,
         'binary_operator_spaces' => array(
             'default'   => 'align_single_space_minimal',
             'operators' => array('||' => null, '&&' => null)
@@ -26,5 +27,5 @@
         'psr_autoloading'             => false,
     ))
     ->setUsingCache(true)
-    ->setFinder($finder);
+    ->setFinder($finder)    
 ;
diff --git a/composer.json b/composer.json
index a5d09e2c..290297c8 100644
--- a/composer.json
+++ b/composer.json
@@ -43,7 +43,7 @@
     },
     "require-dev": {
         "phpunit/php-code-coverage": "^9.1.10",
-        "friendsofphp/php-cs-fixer": "^3.75.0",
+        "friendsofphp/php-cs-fixer": "^3.88.0",
         "phpstan/phpstan": "2.1.17",
         "vimeo/psalm": "6.11.0"
     },
diff --git a/lib/Doctrine/Validator.php b/lib/Doctrine/Validator.php
index 638f3cb3..fefa29de 100644
--- a/lib/Doctrine/Validator.php
+++ b/lib/Doctrine/Validator.php
@@ -171,6 +171,9 @@ public static function isValidType($var, $type)
             return true;
         } elseif ($var === null) {
             return true;
+        } elseif ($type === 'json') {
+            // JSON type can be object, array, string, number, boolean, or null (null handled above)
+            return is_object($var) || is_array($var) || is_string($var) || is_numeric($var) || is_bool($var);
         } elseif (is_object($var)) {
             return $type == 'object';
         } elseif (is_array($var)) {
@@ -195,8 +198,6 @@ public static function isValidType($var, $type)
                 return is_array($var);
             case 'object':
                 return is_object($var);
-            case 'json':
-                return is_object($var) || is_array($var);
             case 'boolean':
                 return is_bool($var) || (is_numeric($var) && ($var == 0 || $var == 1));
             case 'timestamp':
diff --git a/phpstan-baseline.php b/phpstan-baseline.php
index 521e7f27..a30dedf4 100644
--- a/phpstan-baseline.php
+++ b/phpstan-baseline.php
@@ -1222,7 +1222,7 @@
 $ignoreErrors[] = array(
     'message'    => '#^Call to function is_array\\(\\) with mixed will always evaluate to false\\.$#',
     'identifier' => 'function.impossibleType',
-    'count'      => 3,
+    'count'      => 2,
     'path'       => __DIR__ . '/lib/Doctrine/Validator.php',
 );
 $ignoreErrors[] = array(
diff --git a/tests/ValidatorTestCase.php b/tests/ValidatorTestCase.php
index af3b0b13..8a6aea0d 100644
--- a/tests/ValidatorTestCase.php
+++ b/tests/ValidatorTestCase.php
@@ -113,6 +113,30 @@ public function testIsValidType()
         $this->assertFalse(Doctrine_Validator::isValidType($var, 'float'));
         $this->assertFalse(Doctrine_Validator::isValidType($var, 'array'));
         $this->assertTrue(Doctrine_Validator::isValidType($var, 'object'));
+
+        // Test JSON type validation
+        $var = array('key' => 'value');
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'array'));
+        $this->assertFalse(Doctrine_Validator::isValidType($var, 'object'));
+
+        $var = new stdClass();
+        $var->property = 'value';
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
+        $this->assertFalse(Doctrine_Validator::isValidType($var, 'array'));
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'object'));
+
+        $var = 'string';
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
+
+        $var = 123;
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
+
+        $var = null;
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
+
+        $var = true;
+        $this->assertTrue(Doctrine_Validator::isValidType($var, 'json'));
     }
 
     public function testValidate2()