diff --git a/composer.json b/composer.json
index c5c88d0..a045859 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": "~5.4 || ~7.0"
+        "php": "~5.4 || ~7.0 || ~8.0"
     },
     "autoload": {
         "psr-4": { "Pubsubhubbub\\Subscriber\\": "src/" }