diff --git a/src/Illuminate/Http/Client/PendingRequest.php b/src/Illuminate/Http/Client/PendingRequest.php
index 78e361feffad..28defb4d9607 100644
--- a/src/Illuminate/Http/Client/PendingRequest.php
+++ b/src/Illuminate/Http/Client/PendingRequest.php
@@ -78,7 +78,7 @@ class PendingRequest
     /**
      * The raw body for the request.
      *
-     * @var string
+     * @var \Psr\Http\Message\StreamInterface|string
      */
     protected $pendingBody;
 
@@ -259,7 +259,7 @@ public function baseUrl(string $url)
     /**
      * Attach a raw body to the request.
      *
-     * @param  string  $content
+     * @param  \Psr\Http\Message\StreamInterface|string  $content
      * @param  string  $contentType
      * @return $this
      */
diff --git a/tests/Http/HttpClientTest.php b/tests/Http/HttpClientTest.php
index df4f7165373c..6b790aa06534 100644
--- a/tests/Http/HttpClientTest.php
+++ b/tests/Http/HttpClientTest.php
@@ -6,6 +6,7 @@
 use GuzzleHttp\Middleware;
 use GuzzleHttp\Promise\PromiseInterface;
 use GuzzleHttp\Psr7\Response as Psr7Response;
+use GuzzleHttp\Psr7\Utils;
 use GuzzleHttp\TransferStats;
 use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Contracts\Support\Arrayable;
@@ -357,6 +358,26 @@ public function testSendRequestBodyWithManyAmpersands()
         $this->factory->withBody($body, 'text/plain')->send('post', 'http://foo.com/api');
     }
 
+    public function testSendStreamRequestBody()
+    {
+        $string = 'Look at me, i am a stream!!';
+        $resource = fopen('php://temp', 'w');
+        fwrite($resource, $string);
+        rewind($resource);
+        $body = Utils::streamFor($resource);
+
+        $fakeRequest = function (Request $request) use ($string) {
+            self::assertSame($string, $request->body());
+            self::assertContains('text/plain', $request->header('Content-Type'));
+
+            return ['my' => 'response'];
+        };
+
+        $this->factory->fake($fakeRequest);
+
+        $this->factory->withBody($body, 'text/plain')->send('post', 'http://foo.com/api');
+    }
+
     public function testUrlsCanBeStubbedByPath()
     {
         $this->factory->fake([