diff --git a/composer.json b/composer.json
index 3f245c0..b01a24f 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 		"email": "will@fullscreen.io"
 	}],
 	"require": {
-		"silverstripe/framework": "~3.1"
+		"silverstripe/framework": "^4"
 	},
 	"require-dev": {
 		"phpunit/PHPUnit": "~3.7@stable"