diff --git a/src/workflow/ArcanistDiffWorkflow.php b/src/workflow/ArcanistDiffWorkflow.php
index 3b64f53d..febca017 100644
--- a/src/workflow/ArcanistDiffWorkflow.php
+++ b/src/workflow/ArcanistDiffWorkflow.php
@@ -334,6 +334,12 @@ public function getArguments() {
         'help' => pht(
           'After creating a diff or revision, open it in a web browser.'),
       ),
+      'needs-review' => array(
+        'short' => 'r',
+        'help' => pht(
+          'Send a notification to the reviewers that the revision is ready '.
+          'for review.'),
+      ),
       '*' => 'paths',
       'head' => array(
         'param' => 'commit',