diff --git a/README.md b/README.md
index b5fd4ad..3a17a8c 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ A container class for immutable settings objects. Not a DI container. PHP 7.4+
 ```json
 {
 	"require": {
-		"php": "^7.4",
+		"php": "^7.4 || ^8",
 		"chillerlan/php-settings-container": "dev-main"
 	}
 }