diff --git a/composer.json b/composer.json
index 6f3f337..14ecf9f 100644
--- a/composer.json
+++ b/composer.json
@@ -22,6 +22,8 @@
     },
     "require": {
         "php": "^7.3",
+        "ext-libxml": "*",
+        "ext-simplexml": "*",
         "ezsystems/ezplatform-kernel": "~1.2.0@dev",
         "ezsystems/ezplatform-content-forms": "^1.0@dev",
         "ezsystems/ezplatform-graphql": "^2.0@dev",