diff --git a/go/twitterchiver/related_fetcher/fetcher.go b/go/twitterchiver/related_fetcher/fetcher.go
index 1188159dd5..fc5f55d7f1 100644
--- a/go/twitterchiver/related_fetcher/fetcher.go
+++ b/go/twitterchiver/related_fetcher/fetcher.go
@@ -273,6 +273,11 @@ func relatedFetchTick(ctx context.Context, cfg WorkerConfig) error {
 
 		log.Printf("[%v:%d] Got %d tweets to fetch (%v)", cfg.Name, t.ID, len(tweetIDsToFetch), tweetIDsToFetch)
 		if len(tweetIDsToFetch) == 0 {
+			if _, err := cfg.DatabasePool.Exec(ctx, "UPDATE tweets SET fetched_related_tweets=true WHERE id=$1", t.ID); err != nil {
+				log.Printf("[%v:%d] Updating tweet to mark as completed: %v", cfg.Name, t.ID, err)
+			} else {
+				log.Printf("[%v:%d] Successfully marked as done (no tweets to fetch).", cfg.Name, t.ID)
+			}
 			continue
 		}