diff --git a/composer.json b/composer.json
index ab836e4..776d0e7 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
 	],
 	"require": {
 		"php": ">=5.4",
-		"composer/installers": "~1.0"
+		"composer/installers": "^1.0 || ^2.0"
 	},
 	"require-dev": {
 		"phing/phing": "~2.4"