diff --git a/composer.json b/composer.json
index 8ec39bd..70dde6c 100644
--- a/composer.json
+++ b/composer.json
@@ -14,6 +14,7 @@
     ],
     "require": {
         "nilportugues/json-api": "~1.0",
+        "nilportugues/api-transformer": "1.0.6",
         "symfony/psr-http-message-bridge": "~0.2"
     },
     "autoload": {