diff --git a/composer.json b/composer.json
index cbf4cf5..4893b18 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     },
     "require": {
         "php": "^8.1",
-        "phplist/core": "v5.0.0-alpha3"
+        "phplist/core": "v5.0.0-alpha6"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",