diff --git a/src/DependencyInjection/VichUploaderExtension.php b/src/DependencyInjection/VichUploaderExtension.php
index 6e7db8a3..de9e65b6 100644
--- a/src/DependencyInjection/VichUploaderExtension.php
+++ b/src/DependencyInjection/VichUploaderExtension.php
@@ -146,6 +146,8 @@ protected function registerAnnotationStrategy(ContainerBuilder $container, array
                     throw new MissingPackageException($msg);
                 }
 
+                @trigger_error('Annotation support is deprecated since version 2.5 and will be removed in 3.0. Use attributes instead.', E_USER_DEPRECATED);
+
                 $container->setDefinition(
                     'vich_uploader.metadata.reader',
                     new Definition(AnnotationReader::class)