diff --git a/core/lib/Drupal/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumper.php b/core/lib/Drupal/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumper.php
index 23290b6..949950f 100644
--- a/core/lib/Drupal/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumper.php
+++ b/core/lib/Drupal/Component/DependencyInjection/Dumper/OptimizedPhpArrayDumper.php
@@ -252,6 +252,8 @@ protected function getServiceDefinition(Definition $definition) {
       }
     }
 
+    $service['shared'] = $definition->isShared();
+
     if (($decorated = $definition->getDecoratedService()) !== NULL) {
       throw new InvalidArgumentException("The 'decorated' definition is not supported by the Drupal 8 run-time container. The Container Builder should have resolved that during the DecoratorServicePass compiler pass.");
     }