diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/44.quantum-mechanics/30.n3/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/44.quantum-mechanics/30.n3/10.main/textbook.fr.md
index b5ce4850e..297e7bba3 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/44.quantum-mechanics/30.n3/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/44.quantum-mechanics/30.n3/10.main/textbook.fr.md
@@ -10,6 +10,8 @@ lessons:
       order: 3
     - slug: quantum-mechanics-234-main-panorama
       order: 2
+    - slug: modern-versus-classical-mechanics-3-main
+      order: 3
 ---
 
 Mécanique quantique niveau 3, main
\ No newline at end of file