diff --git a/BACKLOG b/BACKLOG
index 7702feb..c63caf8 100644
--- a/BACKLOG
+++ b/BACKLOG
@@ -1,5 +1,6 @@
 ========== > TODO ==========
 
 1. Return number of bytes written from Arc4Gen::Generate().
+2. Implement safe storage.
 
 ========== < TODO ==========