diff --git a/src/OpenApi/Factory/OpenApiFactory.php b/src/OpenApi/Factory/OpenApiFactory.php
index 351b9d68193..5fc35811c59 100644
--- a/src/OpenApi/Factory/OpenApiFactory.php
+++ b/src/OpenApi/Factory/OpenApiFactory.php
@@ -62,11 +62,12 @@
 use Symfony\Component\Routing\RouterInterface;
 use Symfony\Component\TypeInfo\Type;
 use Symfony\Component\TypeInfo\TypeIdentifier;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * Generates an Open API v3 specification.
  */
-final class OpenApiFactory implements OpenApiFactoryInterface
+final class OpenApiFactory implements OpenApiFactoryInterface, ResetInterface
 {
     use NormalizeOperationNameTrait;
     use StateOptionsTrait;
@@ -1065,4 +1066,10 @@ private function getErrorResource(string $error, ?int $status = null, ?string $d
 
         return $this->localErrorResourceCache[$error] = $errorResource;
     }
+
+    public function reset(): void
+    {
+        $this->routeCollection = null;
+        $this->localErrorResourceCache = [];
+    }
 }
diff --git a/src/OpenApi/Tests/Factory/OpenApiFactoryTest.php b/src/OpenApi/Tests/Factory/OpenApiFactoryTest.php
index d8773f8c7a6..9c26b8e971c 100644
--- a/src/OpenApi/Tests/Factory/OpenApiFactoryTest.php
+++ b/src/OpenApi/Tests/Factory/OpenApiFactoryTest.php
@@ -1438,4 +1438,40 @@ public function testGetExtensionPropertiesWithFalseValue(): void
 
         $openApi = $factory->__invoke();
     }
+
+    public function testReset(): void
+    {
+        $resourceNameCollectionFactory = $this->createMock(ResourceNameCollectionFactoryInterface::class);
+        $resourceCollectionMetadataFactory = $this->createMock(ResourceMetadataCollectionFactoryInterface::class);
+        $propertyNameCollectionFactory = $this->createMock(PropertyNameCollectionFactoryInterface::class);
+        $propertyMetadataFactory = $this->createMock(PropertyMetadataFactoryInterface::class);
+        $schemaFactory = $this->createMock(\ApiPlatform\JsonSchema\SchemaFactoryInterface::class);
+
+        $factory = new OpenApiFactory(
+            $resourceNameCollectionFactory,
+            $resourceCollectionMetadataFactory,
+            $propertyNameCollectionFactory,
+            $propertyMetadataFactory,
+            $schemaFactory
+        );
+
+        $refl = new \ReflectionClass($factory);
+        $routeCollection = $refl->getProperty('routeCollection');
+        $routeCollection->setAccessible(true);
+        if (class_exists(\Symfony\Component\Routing\RouteCollection::class)) {
+            $routeCollection->setValue($factory, $this->createMock(\Symfony\Component\Routing\RouteCollection::class));
+        }
+
+        $localErrorResourceCache = $refl->getProperty('localErrorResourceCache');
+        $localErrorResourceCache->setAccessible(true);
+        $localErrorResourceCache->setValue($factory, ['foo' => 'bar']);
+
+        $this->assertNotNull($routeCollection->getValue($factory));
+        $this->assertNotEmpty($localErrorResourceCache->getValue($factory));
+
+        $factory->reset();
+
+        $this->assertNull($routeCollection->getValue($factory));
+        $this->assertEmpty($localErrorResourceCache->getValue($factory));
+    }
 }