diff --git a/composer.json b/composer.json
index 306bc1e..e1d5d74 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
 	"require-dev": {
 		"phpunit/phpunit": "^10.5",
 		"php-mock/php-mock-phpunit": "^2.15",
-		"guzzlehttp/psr7": "^2.12",
+		"guzzlehttp/psr7": "^2.12 || ^3.0",
 		"corpus/coding-standard": "^0.10.0",
 		"squizlabs/php_codesniffer": "^4.0",
 		"friendsofphp/php-cs-fixer": "^3.95",