diff --git a/composer.json b/composer.json
index 3dbf0ece..6f6e199b 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,8 @@
         "symfony/process": "^5.4",
         "symfony/property-access": "^5.0",
         "symfony/yaml": "^5.0",
-        "psy/psysh": "^0.10.8"
+        "psy/psysh": "^0.10.8",
+        "doctrine/collections": "^1.8"
     },
     "require-dev": {
         "ibexa/code-style": "^1.0",