diff --git a/TODO.md b/TODO.md
index ddf2a87c58..d3dd766e42 100644
--- a/TODO.md
+++ b/TODO.md
@@ -39,6 +39,7 @@
 - [ ] shells
 - [ ] plugins
 - [ ] dataframes
+- [ ] port over `which` logic
 
 ## Post-nushell merge:
 - [ ] Overlays (replacement for `autoenv`), adding modules to shells