diff --git a/composer.json b/composer.json
index f9ab2c93994f115d6eb9f544753735c67fc68354..2676c8dda8b6a4c5d1f19159c868bc9b2274d18b 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,9 @@
     },
     "minimum-stability": "stable",
     "require": {
-        "php": "^7.1",
+        "php": "^7.1"
+        "ext-json": "*",
+        "ext-zip": "*",
         "api-platform/core": "^2.2",
         "doctrine/cache": "^1.8",
         "doctrine/inflector": "^1.3",