diff --git a/supabase/migrations/20251017184846_7fc6db54-81f3-4c00-8896-552ca89904d9.sql b/supabase/migrations/20251017184846_7fc6db54-81f3-4c00-8896-552ca89904d9.sql
new file mode 100644
index 00000000..33148b7d
--- /dev/null
+++ b/supabase/migrations/20251017184846_7fc6db54-81f3-4c00-8896-552ca89904d9.sql
@@ -0,0 +1,10 @@
+-- Clean up orphaned milestone submissions without submission_items
+-- These submissions cannot be properly moderated due to missing required data
+
+DELETE FROM content_submissions
+WHERE submission_type = 'milestone'
+  AND status = 'pending'
+  AND id NOT IN (
+    SELECT DISTINCT submission_id 
+    FROM submission_items
+  );
\ No newline at end of file