diff --git a/tunnel-nim/todo.md b/tunnel-nim/todo.md
index a80193f..b426a77 100644
--- a/tunnel-nim/todo.md
+++ b/tunnel-nim/todo.md
@@ -1,5 +1,6 @@
 # tunnel-nim todo's
 
 - [ ] show no output from `tunnel up` on connection
+- [ ] add a `tunnel kill` command which removes all ssh control files
 
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