diff --git a/composer.json b/composer.json
index 34c37ca..a8bb716 100644
--- a/composer.json
+++ b/composer.json
@@ -11,8 +11,11 @@
   "require": {
     "php": "^8.1",
     "ext-xml": "*",
+    "psr/http-client": "^1.0",
     "psr/http-client-implementation": "*",
+    "psr/http-factory": "^1.0",
     "psr/http-factory-implementation": "*",
+    "psr/http-message": "^2.0",
     "psr/http-message-implementation": "*",
     "psr/log": "^3.0",
     "symfony/serializer": "^6.4"
@@ -21,7 +24,7 @@
     "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
     "guzzlehttp/psr7": "^2.6",
     "http-interop/http-factory-guzzle": "^1.2",
-    "php-http/mock-client": "^1.0",
+    "php-http/mock-client": "^1.6",
     "phpstan/phpstan": "^1.10",
     "phpunit/phpunit": "^9.6",
     "previousnext/coding-standard": "^0.1.3",