diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
index 7113373b5..ee2181273 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/40.n4/10.main/textbook.fr.md
@@ -6,6 +6,9 @@ visible: false
 lessons:
     - slug: relativity-linear-4
       order: 1
+    - slug: relativity-234-main-panorama
+      order: 3
 ---
 
-Les relativités niveau 4, main
\ No newline at end of file
+Les relativités niveau 4, main
+