diff --git a/composer.json b/composer.json
index f355ed0..90cd082 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
 
 	"require":
 	{
-		"silverstripe/cms": "3.*",
+		"silverstripe/cms": "~3.1",
 		"silverstripe/widgets": "dev-master"
 	}
 }
\ No newline at end of file