diff --git a/composer.json b/composer.json
index 7ed4aea..275f0f9 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     "phpseclib/phpseclib": "^3.0.23",
     "guzzlehttp/guzzle": "^7.8.0",
     "guzzlehttp/psr7": "^2.6.1",
-    "psr/http-message": "^1.1"
+    "psr/http-message": "^1.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^9.6.13",