diff --git a/composer.json b/composer.json
index 6ae446d..eddbe66 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,8 @@
         "symfony/console": "^2.7 || ^3.0",
         "symfony/config": "^2.7 || ^3.0",
         "symfony/finder": "^2.7 || ^3.0",
-        "symfony/options-resolver": "^2.7 || ^3.0"
+        "symfony/options-resolver": "^2.7 || ^3.0",
+        "symfony/yaml": "^2.7 || ^3.0"
     },
     "target-dir": "Mkk/GearmanBundle",
     "autoload": {