diff --git a/TODO.md b/TODO.md
index f1b89c3..7b54d4a 100644
--- a/TODO.md
+++ b/TODO.md
@@ -22,6 +22,7 @@
 [X] Mobs don't drop bomb items
 [ ] Execute commands on game/wave end
 [X] Player Respawning
+[ ] Difficulty
 
 # QOL