diff --git a/composer.json b/composer.json
index 23ecec8d..736cb479 100644
--- a/composer.json
+++ b/composer.json
@@ -39,6 +39,9 @@
         "weitzman/drupal-test-traits": "^2.1"
     },
     "conflict": {
+        "drupal/core": ">=10.2",
+        "drupal/core-composer-scaffold": ">=10.2",
+        "drupal/core-dev": ">=10.2",
         "drupal/drupal": "*"
     },
     "config": {