diff --git a/templates/book_chapter.yml b/templates/book_chapter.yml
index 7c69a5e..f105430 100644
--- a/templates/book_chapter.yml
+++ b/templates/book_chapter.yml
@@ -269,6 +269,7 @@ steps:
   # PASS 3 think so the character-state extraction does not overwrite last_text().
   - type: document
     filename: "Chapter_{chapter_number}_draft"
+    primary_deliverable: true
 
   - type: think
     hint: |