diff --git a/composer.json b/composer.json
index f367db2..3884fa0 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
 		"MIT"
 	],
 	"require" : {
-		"mpdf/mpdf" : "^7.0",
+		"mpdf/mpdf" : "^7.0||^8.0",
 		"symfony/framework-bundle" : ">=2.3",
 		"symfony/options-resolver": ">=2.3"
 	},