diff --git a/composer.json b/composer.json
index 455dfaf..d18af3b 100644
--- a/composer.json
+++ b/composer.json
@@ -26,8 +26,9 @@
     "require-dev": {
         "fabpot/goutte": "^4.0",
         "php-http/guzzle6-adapter": "^2.0",
-        "phpunit/phpunit": "^9.5",
-        "dms/phpunit-arraysubset-asserts": "^0.4.0"
+        "phpunit/phpunit": "^9.6",
+        "dms/phpunit-arraysubset-asserts": "^0.5",
+        "php-http/message-factory": "^1.1"
     },
     "autoload": {
         "psr-4": {