diff --git a/TODO.md b/TODO.md
index cb18d08..c4c0668 100644
--- a/TODO.md
+++ b/TODO.md
@@ -3,5 +3,4 @@
 ## Optimizations
 
 - To check:
-  - fastnbt borrow
-  - fastnbt from_reader
+  - Bulk `block_at()`, possibly other `top_layer()` improvements