diff --git a/composer.json b/composer.json
index ed0bc65..9b2d33d 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
 	],
 	"require":
 	{
-		"silverstripe/framework": ">=3.0.1",
+		"silverstripe/framework": ">=3.0.1 <4.0.0",
 		"composer/installers": "*"
 	},
 	"support": {