diff --git a/composer.json b/composer.json
index a9866ad..8dd712b 100644
--- a/composer.json
+++ b/composer.json
@@ -32,6 +32,8 @@
     },
     "require": {
         "php": "^8.1",
+        "ext-json": "*",
+        "ext-spl": "*",
         "symfony/process": "^6.0"
     },
     "require-dev": {