diff --git a/composer.json b/composer.json
index 7c0c113..a6130df 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": "^8.1",
-        "silverstripe/cms": "^5"
+        "silverstripe/cms": "^5.4"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6",