diff --git a/composer.json b/composer.json
index 62b1cd8..3e226ca 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,6 @@
 		"email": "will@fullscreen.io"
 	}],
 	"require": {
-		"silverstripe/framework": "3.1.*"
+		"silverstripe/framework": ">=3.1.x-dev,<4.0"
 	}
-}
\ No newline at end of file
+}