diff --git a/composer.json b/composer.json
index f7ef73f..4d77920 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.1 || ^8.0",
         "psr/http-factory": "^1.0",
         "phpunit/phpunit": "^6.5 || ^7.0 || ^8.0 || ^9.0"
     },