diff --git a/labguide/computing/etiquette.md b/labguide/computing/etiquette.md
index 931ab73..d1658e7 100644
--- a/labguide/computing/etiquette.md
+++ b/labguide/computing/etiquette.md
@@ -3,6 +3,7 @@ title: "Computing"
 format:
   html:
     page-layout: full
+number-sections: true
 ---
 
 ##  Computer security