diff --git a/composer.json b/composer.json
index 953f7794..664247f5 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,8 @@
         "league/flysystem-bundle": "2.4.0",
         "sylius/mailer-bundle":  "^1.8 || ^2.0@beta",
         "lchrusciel/api-test-case": "^4.1 || ^5.0",
-        "nelmio/alice": "^3.10"
+        "nelmio/alice": "^3.10",
+        "doctrine/collections": "1.8.0 || ^2.2"
     },
     "conflict": {
         "symfony/symfony": "4.1.8",