diff --git a/composer.json b/composer.json
index 1c0be81..e7a8557 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
   , "require": {
         "php": ">=7.4"
       , "evenement/evenement": "^3.0 || ^2.0"
-      , "guzzlehttp/psr7": "^2.0"
+      , "guzzlehttp/psr7": "^2.0 || ^3.0"
       , "ratchet/rfc6455": "^0.3.1 || ^0.4.0"
       , "react/socket": "^1.9"
     }