diff --git a/composer.lock b/composer.lock
index a3c5ebe..f08c73b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -282,7 +282,7 @@
         },
         {
             "name": "symfony/yaml",
-            "version": "v4.2.7",
+            "version": "v4.2.9",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",