diff --git a/composer.json b/composer.json
index 36c91e7..fd64442 100755
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     "source": "https://github.com/christianbarkowsky/contao-extended-checkbox"
   },
   "require":{
-    "contao/core":"~3.5 || ~4.4",
+    "contao/core-bundle":"~3.5 || ~4.4",
     "contao-community-alliance/composer-plugin":"~2.4 || ~3.0"
   },
   "replace": {