diff --git a/composer.json b/composer.json
index 2f70ac76..fd9329fe 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
     }
   ],
   "require": {
-    "silverstripe/framework": "^4.0"
+    "silverstripe/framework": "^4.0@dev"
   },
   "extra": {
     "branch-alias": {