diff --git a/_quarto.yml b/_quarto.yml
index 01f6313..3b1d9f7 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -16,3 +16,4 @@ format:
     css: styles.css
     toc: true
     html-math-method: katex
+    code-line-numbers: true