diff --git a/.vitepress/config.mts b/.vitepress/config.mts
index aae81403..abcdbd28 100644
--- a/.vitepress/config.mts
+++ b/.vitepress/config.mts
@@ -17,6 +17,8 @@ export default defineConfig({
   },
 
   markdown: {
+    lineNumbers: true,
+
     config(md) {
       md.use(MermaidMarkdown);
     },