diff --git a/src/Server/Helper.php b/src/Server/Helper.php
index 3278b1b8d..8105bbb0a 100644
--- a/src/Server/Helper.php
+++ b/src/Server/Helper.php
@@ -525,11 +525,11 @@ public function parsePsrRequest(RequestInterface $request)
 
                 $this->assertJsonObjectOrArray($bodyParams);
             } else {
-                parse_str((string) $request->getBody(), $bodyParams);
-
-                if (! is_array($bodyParams)) {
-                    throw new RequestError('Unexpected content type: ' . Utils::printSafeJson($contentType[0]));
+                if ($request instanceof ServerRequestInterface) {
+                    $bodyParams = $request->getParsedBody();
                 }
+
+                $bodyParams ??= $this->decodeContent((string) $request->getBody(), $contentType[0]);
             }
         }
 
@@ -558,6 +558,22 @@ protected function decodeJson(string $rawBody)
         return $bodyParams;
     }
 
+    /**
+     * @return array<string, mixed>
+     *
+     * @throws RequestError
+     */
+    protected function decodeContent(string $rawBody, string $contentType): array
+    {
+        parse_str($rawBody, $bodyParams);
+
+        if (! is_array($bodyParams)) {
+            throw new RequestError('Unexpected content type: ' . Utils::printSafeJson($contentType));
+        }
+
+        return $bodyParams;
+    }
+
     /**
      * @param mixed $bodyParams
      *
diff --git a/tests/Server/RequestParsingTest.php b/tests/Server/RequestParsingTest.php
index c5592fc00..914f3749e 100644
--- a/tests/Server/RequestParsingTest.php
+++ b/tests/Server/RequestParsingTest.php
@@ -10,6 +10,7 @@
 use GraphQL\Server\RequestError;
 use InvalidArgumentException;
 use Nyholm\Psr7\Request;
+use Nyholm\Psr7\ServerRequest;
 use Nyholm\Psr7\Stream;
 use Nyholm\Psr7\Uri;
 use PHPUnit\Framework\TestCase;
@@ -110,6 +111,8 @@ public function testParsesUrlencodedRequest(): void
         $parsed = [
             'raw' => $this->parseRawFormUrlencodedRequest($post),
             'psr' => $this->parsePsrFormUrlEncodedRequest($post),
+            'serverRequest' => $this->parsePsrFormUrlEncodedServerRequest($post, false),
+            'parsedServerRequest' => $this->parsePsrFormUrlEncodedServerRequest($post, true),
         ];
 
         foreach ($parsed as $method => $parsedBody) {
@@ -155,6 +158,24 @@ private function parsePsrFormUrlEncodedRequest($postValue)
         );
     }
 
+    private function parsePsrFormUrlEncodedServerRequest($postValue, bool $parsed)
+    {
+        $helper = new Helper();
+
+        $request = new ServerRequest(
+            'POST',
+            '',
+            ['Content-Type' => 'application/x-www-form-urlencoded'],
+            $parsed ? null : http_build_query($postValue),
+        );
+
+        if ($parsed) {
+            $request = $request->withParsedBody($postValue);
+        }
+
+        return $helper->parsePsrRequest($request);
+    }
+
     public function testParsesGetRequest(): void
     {
         $query     = '{my query}';