diff --git a/README.md b/README.md
index b6f40f1bbf74a0e24bd527e75a6ad89c8f915e21..e4f7a4849d59a4c831c57bffd8c6a2d375340b11 100644
--- a/README.md
+++ b/README.md
@@ -156,7 +156,7 @@ Exercices :
 
 - Rôle de la couleur en visualisation ([slides](https://docs.google.com/presentation/d/1P-WKjOwfkyfpWerVYBX8BQmHUnKaO-SGEcLocbPH92E/edit))
 - Visualiser le machine learning ([video](https://youtu.be/LNMxO9joI-U?t=5816), [slides](https://docs.google.com/presentation/d/16BWoESKZoydnzZl5h7NVVIG7ISi8LaiZj_mE7WvKDJc/edit), [notebook](https://observablehq.com/d/1992f2ee36fa33c1))
-- Layouts D3 avancés : force-directed graphs, hierarchies, treemaps ([notebook](https://observablehq.com/d/9df305f79f3d43c6))
+- Layouts D3 avancés : force-directed graphs, hierarchies, treemaps ([notebook](https://observablehq.com/d/f22153e092ceb9b1)) notebook 23-24 ([notebook](https://observablehq.com/d/9df305f79f3d43c6))
 
 ### TP 6