diff --git a/.styleci.yml b/.styleci.yml
index a1a1caa0c..614c1fbf7 100644
--- a/.styleci.yml
+++ b/.styleci.yml
@@ -1,5 +1,7 @@
 preset: psr12
 
+version: 8.1
+
 enabled:
   - symfony_braces
 
diff --git a/library/Mockery/Reflector.php b/library/Mockery/Reflector.php
index 9672924cf..4e8c6e1fc 100644
--- a/library/Mockery/Reflector.php
+++ b/library/Mockery/Reflector.php
@@ -147,8 +147,8 @@ private static function typeToString(\ReflectionType $type, \ReflectionClass $de
      */
     private static function getTypeInformation(\ReflectionType $type, \ReflectionClass $declaringClass)
     {
-        // PHP 8 union types can be recursively processed
-        if ($type instanceof \ReflectionUnionType) {
+        // PHP 8 union types and PHP 8.1 intersection types can be recursively processed
+        if ($type instanceof \ReflectionUnionType || $type instanceof \ReflectionIntersectionType) {
             $types = [];
 
             foreach ($type->getTypes() as $innterType) {
diff --git a/tests/PHP81/Php81LanguageFeaturesTest.php b/tests/PHP81/Php81LanguageFeaturesTest.php
index afb761435..26af5885f 100644
--- a/tests/PHP81/Php81LanguageFeaturesTest.php
+++ b/tests/PHP81/Php81LanguageFeaturesTest.php
@@ -72,6 +72,16 @@ public function testMockingClassWithNewInInitializer()
 
         $this->assertInstanceOf(ClassWithNewInInitializer::class, $mock);
     }
+
+    /** @test */
+    public function it_can_mock_a_class_with_an_intersection_argument_type_hint()
+    {
+        $mock = Mockery::mock(ArgumentIntersectionTypeHint::class);
+        $object = new IntersectionTypeHelperClass();
+        $mock->allows()->foo($object);
+
+        $mock->foo($object);
+    }
 }
 
 interface LoggerInterface
@@ -124,3 +134,17 @@ public function getTimestamp(): float
     {
     }
 }
+
+class IntersectionTypeHelperClass
+{
+}
+interface IntersectionTypeHelperInterface
+{
+}
+
+class ArgumentIntersectionTypeHint
+{
+    public function foo(IntersectionTypeHelperClass&IntersectionTypeHelperInterface $foo)
+    {
+    }
+}