diff --git a/composer.json b/composer.json
index 9a82d99..8645893 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": "^5.3 || ^7.0"
+        "php": "^5.3 || ^7.0 || ^8.0"
     },
     "suggest": {
         "psr/http-message": "The package containing the PSR-7 interfaces"