diff --git a/TODO.md b/TODO.md
index 06dbe88..f3b7d7f 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,8 @@
-Use /dev/ptmx, to get ptmx (master) and pts (slave) file descriptors,
+- [X] Use /dev/ptmx, to get ptmx (master) and pts (slave) file descriptors,
 then fork and exec shfx as child (+ close ptmx), then close pts as parent.
 >[!NOTE]
 > Use `termios(3)` to enable raw mode (implemented in `cursed.c`) (for the slave or master?)
+
+- [ ] Implement a SIGCHLD handler instead of using `waitpid` in `killchild()`, see 2nd example in `man wait(3p)`
+- [ ] Use threads to launch `killchild` to avoid blocking, then just join all the threads using atexit()
+