diff --git a/composer.json b/composer.json
index d372cec..53a67e3 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
     "require": {
         "php": "^7.1 || ^8.0",
         "ext-json": "*",
-        "psr/http-message": "^1.0",
+        "psr/http-message": "^1.0 || ^2.0",
         "psr/http-client": "^1.0",
         "guzzlehttp/guzzle": "^6.3|^7.0.1"
     },
diff --git a/examples/query_example.php b/examples/query_example.php
index 7abc472..c038fa7 100644
--- a/examples/query_example.php
+++ b/examples/query_example.php
@@ -2,6 +2,7 @@
 
 require_once __DIR__ . '/../vendor/autoload.php';
 
+use GraphQL\ArgumentObject;
 use GraphQL\Client;
 use GraphQL\Exception\QueryError;
 use GraphQL\Query;
@@ -15,7 +16,13 @@
 
 // Create the GraphQL query
 $gql = (new Query('pokemon'))
-    ->setArguments(['name' => 'Pikachu'])
+    ->setArguments([
+        'name' => 'Pikachu',
+        'age' => new ArgumentObject([
+            'min' => 7,
+            'max' => 20
+        ]),
+    ])
     ->setSelectionSet(
         [
             'id',
diff --git a/src/ArgumentObject.php b/src/ArgumentObject.php
new file mode 100644
index 0000000..7202f6c
--- /dev/null
+++ b/src/ArgumentObject.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace GraphQL;
+
+use GraphQL\Util\StringLiteralFormatter;
+
+class ArgumentObject
+{
+
+    /**
+     * @var array
+     */
+    private $input;
+
+    /**
+     * @param array $input
+     */
+    public function __construct(array $input)
+    {
+        $this->input = $input;
+    }
+
+
+    public function __toString(): string
+    {
+        $result = [];
+        foreach ($this->input as $key => $value) {
+            if (is_scalar($value) || $value === null) {
+                $value = StringLiteralFormatter::formatValueForRHS($value);
+            } elseif (is_array($value)) {
+                $value = StringLiteralFormatter::formatArrayForGQLQuery($value);
+            }
+
+            $result[] = "${key}: ${value}";
+        }
+
+        return '{' . implode(', ', $result) . '}';
+    }
+}