diff --git a/composer.json b/composer.json
index 9f14e0e..f4d5478 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "require": {
         "php": "^7.4|^8.0",
         "psr/http-message": "^1.0",
-        "guzzlehttp/psr7": "^2"
+        "guzzlehttp/psr7": "^1|^2"
     },
     "require-dev": {
         "bamarni/composer-bin-plugin": "^1.4",