diff --git a/classes/task/lifecycle_cleanup_task.php b/classes/task/lifecycle_cleanup_task.php
index 19455eaf..09a96e61 100644
--- a/classes/task/lifecycle_cleanup_task.php
+++ b/classes/task/lifecycle_cleanup_task.php
@@ -48,7 +48,9 @@ public function get_name() {
     public function execute() {
         global $DB;
         $twomonthago = time() - 60 * 24 * 60 * 60;
+        $oneyearago = time() - 365 * 24 * 60 * 60;
         $DB->delete_records_select('tool_lifecycle_delayed', 'delayeduntil <= :time', ['time' => $twomonthago]);
         $DB->delete_records_select('tool_lifecycle_delayed_workf', 'delayeduntil <= :time', ['time' => $twomonthago]);
+        $DB->delete_records_select('lifecyclestep_email_notified', 'timemailsent <= :time', ['time' => $oneyearago]);
     }
 }