diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/20.n2/30.beyond/annex.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/20.n2/30.beyond/annex.fr.md
index 7e523ddde..497c2f5e2 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/20.n2/30.beyond/annex.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/42.relativistic-mechanics/20.n2/30.beyond/annex.fr.md
@@ -4,6 +4,9 @@ title: les relativités niveau 2
 published: true
 routable: true
 visible: false
+lessons:
+    - slug: relativity-linear-2
+      order: 3
 ---
 
 Les relativités niveau 2, beyond