diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -5610,6 +5610,7 @@
       'PhabricatorFlaggableInterface',
       'PhabricatorSubscribableInterface',
       'PhabricatorApplicationTransactionInterface',
+      'PhabricatorTokenReceiverInterface',
       'PhabricatorSpacesInterface',
       'PhabricatorProjectInterface',
     ),
diff --git a/src/applications/countdown/storage/PhabricatorCountdown.php b/src/applications/countdown/storage/PhabricatorCountdown.php
--- a/src/applications/countdown/storage/PhabricatorCountdown.php
+++ b/src/applications/countdown/storage/PhabricatorCountdown.php
@@ -6,6 +6,7 @@
     PhabricatorFlaggableInterface,
     PhabricatorSubscribableInterface,
     PhabricatorApplicationTransactionInterface,
+    PhabricatorTokenReceiverInterface,
     PhabricatorSpacesInterface,
     PhabricatorProjectInterface {
 
@@ -89,6 +90,13 @@
     return $timeline;
   }
 
+/* -(  PhabricatorTokenReceiverInterface  )---------------------------------- */
+
+
+  public function getUsersToNotifyOfTokenGiven() {
+    return array($this->getAuthorPHID());
+  }
+
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */