diff --git a/composer.json b/composer.json
index 77c4fe2..8fe5ee9 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
         "php-http/discovery": "^1.4",
         "php-http/httplug": "^1.0 || ^2.0",
         "php-http/message": "^1.7",
-        "psr/http-message": "^1.0"
+        "psr/http-message": "^1.0 || ^2.0"
     },
     "require-dev": {
         "nyholm/psr7": "^1.6.1",