diff --git a/core/lib/Drupal/Component/Plugin/composer.json b/core/lib/Drupal/Component/Plugin/composer.json
index 09179e5..e4c2ddc 100644
--- a/core/lib/Drupal/Component/Plugin/composer.json
+++ b/core/lib/Drupal/Component/Plugin/composer.json
@@ -11,7 +11,7 @@
         "psr-0": {
             "Drupal\\Component\\Plugin\\": ""
         }
-    }
+    },
     "suggest": {
         "symfony/validator": "Leveraged in the use of context aware plugins."
     }