diff --git a/db/newsgroup.sql b/db/newsgroup.sql
index 09f64c1..aaf0231 100644
--- a/db/newsgroup.sql
+++ b/db/newsgroup.sql
@@ -24,4 +24,8 @@ create index newsgroup_message_newsgroup_id_idx on newsgroup_message (
     newsgroup_id, id
 );
 
+create index newsgroup_message_newsgroup_date_idx on newsgroup_message (
+    newsgroup_id, created_on
+);
+
 commit;