diff --git a/composer.json b/composer.json
index ca903aa..f2aa76e 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,7 @@
         "php": ">=5.4",
         "symfony/process": "^2.3",
         "jms/serializer": "^1.0",
+        "phpoption/phpoption": "^1.3",
         "symfony/filesystem": "^2.3",
         "nesbot/carbon": "^1.14",
         "doctrine/collections": "^1.3",