diff --git a/composer.json b/composer.json
index f1a7803..0f7fac3 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
 		"MIT"
 	],
 	"require": {
-		"php": "~7.1",
+		"php": "^7.1 || ^8.0",
 		"phpstan/phpstan": "^0.12"
 	},
 	"conflict": {