diff --git a/composer.json b/composer.json
index 17acb4e..8cbdec2 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         }
     }
   , "require": {
-        "php": ">=5.4.2"
+        "php": ">=8.4.0"
       , "ratchet/rfc6455": "^0.3.1"
       , "react/socket": "^1.0 || ^0.8 || ^0.7 || ^0.6 || ^0.5"
       , "react/event-loop": ">=0.4"