diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index b80fc7017b442..1e66e1bb2fdea 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -695,9 +695,6 @@ private function addSerializerSection(ArrayNodeDefinition $rootNode)
                     ->{!class_exists(FullStack::class) && class_exists(Serializer::class) ? 'canBeDisabled' : 'canBeEnabled'}()
                     ->children()
                         ->booleanNode('enable_annotations')->{!class_exists(FullStack::class) && class_exists(Annotation::class) ? 'defaultTrue' : 'defaultFalse'}()->end()
-                        ->scalarNode('cache')
-                            ->setDeprecated('The "%path%.%node%" option is deprecated since Symfony 3.1 and will be removed in 4.0. Configure the "cache.serializer" service under "framework.cache.pools" instead.')
-                        ->end()
                         ->scalarNode('name_converter')->end()
                         ->scalarNode('circular_reference_handler')->end()
                         ->arrayNode('mapping')