diff --git a/src/Illuminate/Routing/Middleware/ThrottleRequests.php b/src/Illuminate/Routing/Middleware/ThrottleRequests.php
index 143be1e654fb..a7494f5a13fb 100644
--- a/src/Illuminate/Routing/Middleware/ThrottleRequests.php
+++ b/src/Illuminate/Routing/Middleware/ThrottleRequests.php
@@ -102,6 +102,7 @@ protected function addHeaders(Response $response, $maxAttempts, $remainingAttemp
 
         if (! is_null($retryAfter)) {
             $headers['Retry-After'] = $retryAfter;
+            $headers['X-RateLimit-Reset'] = time() + $retryAfter;
         }
 
         $response->headers->add($headers);