diff --git a/composer.json b/composer.json
index e727553..4ae7de8 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 		}
 	],
 	"require": {
-		"composer/installers": "*",
+		"ext-mbstring": "*",
 		"bugsnag/bugsnag": "2.*"
 	}
 }