diff --git a/app/logical/daily_maintenance.rb b/app/logical/daily_maintenance.rb
index 129224e91..0e3257fb3 100644
--- a/app/logical/daily_maintenance.rb
+++ b/app/logical/daily_maintenance.rb
@@ -6,6 +6,7 @@ class DailyMaintenance
     Upload.delete_all(['created_at < ?', 1.day.ago])
     ModAction.delete_all(['created_at < ?', 3.days.ago])
     Delayed::Job.delete_all(['created_at < ?'], 1.day.ago)
+    PostVote.delete_all(['created_at < ?', 1.month.ago])
     TagSubscription.process_all
     prune_ad_hits
   end