diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
index fa64f30e7..d26b46a5a 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/electromagnetism/n4/textbook.en.md
@@ -4,6 +4,8 @@ published: true
 routable: true
 visible: false
 lessons:
+    - slug: brainstorming-123-electromagnetism
+      order: 4
     - slug: brainstorming-234-electromagnetism
       order: 3
 ---