diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index a0a0cebe..dc9dac0a 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -5,6 +5,11 @@ parameters:
 			count: 1
 			path: src/Persistence/Mapping/Driver/StaticPHPDriver.php
 
+		-
+			message: "#^Call to function method_exists\\(\\) with TObjectManager of Doctrine\\\\Persistence\\\\ObjectManager and 'isUninitializedObje…' will always evaluate to true\\.$#"
+			count: 1
+			path: src/Persistence/ObjectManagerDecorator.php
+
 		-
 			message: "#^Doctrine\\\\Persistence\\\\Reflection\\\\EnumReflectionProperty\\:\\:__construct\\(\\) does not call parent constructor from ReflectionProperty\\.$#"
 			count: 1
diff --git a/src/Persistence/ObjectManagerDecorator.php b/src/Persistence/ObjectManagerDecorator.php
index 1b78ec1f..b628f9d8 100644
--- a/src/Persistence/ObjectManagerDecorator.php
+++ b/src/Persistence/ObjectManagerDecorator.php
@@ -4,9 +4,14 @@
 
 namespace Doctrine\Persistence;
 
+use BadMethodCallException;
 use Doctrine\Persistence\Mapping\ClassMetadata;
 use Doctrine\Persistence\Mapping\ClassMetadataFactory;
 
+use function get_class;
+use function method_exists;
+use function sprintf;
+
 /**
  * Base class to simplify ObjectManager decorators
  *
@@ -76,6 +81,28 @@ public function initializeObject(object $obj): void
         $this->wrapped->initializeObject($obj);
     }
 
+    public function isUninitializedObject(mixed $value): bool
+    {
+        if (! method_exists($this->wrapped, 'isUninitializedObject')) {
+            $wrappedClass = get_class($this->wrapped);
+
+            throw new BadMethodCallException(sprintf(
+                <<<'EXCEPTION'
+Context: Trying to call %s
+Problem: The wrapped ObjectManager, an instance of %s does not implement this method.
+Solution: Implement %s::isUninitializedObject() with a signature compatible with this one:
+    public function isUninitializedObject(mixed $value): bool
+EXCEPTION
+                ,
+                __METHOD__,
+                $wrappedClass,
+                $wrappedClass,
+            ));
+        }
+
+        return $this->wrapped->isUninitializedObject($value);
+    }
+
     public function contains(object $object): bool
     {
         return $this->wrapped->contains($object);
diff --git a/tests/Persistence/ObjectManagerDecoratorTest.php b/tests/Persistence/ObjectManagerDecoratorTest.php
index e8219680..97c38e9e 100644
--- a/tests/Persistence/ObjectManagerDecoratorTest.php
+++ b/tests/Persistence/ObjectManagerDecoratorTest.php
@@ -4,6 +4,7 @@
 
 namespace Doctrine\Tests\Persistence;
 
+use BadMethodCallException;
 use Doctrine\Persistence\Mapping\ClassMetadata;
 use Doctrine\Persistence\Mapping\ClassMetadataFactory;
 use Doctrine\Persistence\ObjectManager;
@@ -153,6 +154,37 @@ public function testContains(): void
 
         self::assertTrue($this->decorated->contains($object));
     }
+
+    /** @requires PHP 8.0 */
+    public function testIsUninitializedObject(): void
+    {
+        $object = new TestObject();
+
+        $wrapped   = $this->createMock(ObjectManagerV4::class);
+        $decorated = new NullObjectManagerDecorator($wrapped);
+        $wrapped->expects(self::once())
+            ->method('isUninitializedObject')
+            ->with($object)
+            ->willReturn(false);
+
+        self::assertFalse($decorated->isUninitializedObject($object));
+    }
+
+    /** @requires PHP 8.0 */
+    public function testIsThrowsWhenTheWrappedObjectManagerDoesNotImplementObjectManagerV4(): void
+    {
+        $object = new TestObject();
+
+        $this->expectException(BadMethodCallException::class);
+        $decorated = new NullObjectManagerDecorator($this->createMock(ObjectManager::class));
+
+        self::assertFalse($decorated->isUninitializedObject($object));
+    }
+}
+
+interface ObjectManagerV4 extends ObjectManager
+{
+    public function isUninitializedObject(mixed $object): bool;
 }
 
 /** @extends ObjectManagerDecorator<ObjectManager&MockObject> */