diff --git a/docs/TODO.md b/docs/TODO.md
index 703d8f7d..6d5058d8 100644
--- a/docs/TODO.md
+++ b/docs/TODO.md
@@ -58,6 +58,7 @@
 - [ ] Implement the focus policy
 
 ### Overlay widget
+- [ ] Use the nested layout for the overlay
 - [ ] Rewrite the Handling (ttk.py)
       It would be nice to have it as child outside the layout
 - [ ] Enable mouse move on overlay