diff --git a/composer.json b/composer.json
index ed0dd08..3fa42c5 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
   "license": "GPL-2.0+",
   "minimum-stability": "dev",
   "require": {
-    "drupal/core": "^8.6",
+    "drupal/core": "^8.8 || ^9",
     "drupal/entity": "^1.0-rc1"
   }
 }