diff --git a/src/node/markdown/plugins/highlight.ts b/src/node/markdown/plugins/highlight.ts
index 4bfac633..fbd03e56 100644
--- a/src/node/markdown/plugins/highlight.ts
+++ b/src/node/markdown/plugins/highlight.ts
@@ -85,7 +85,6 @@ export async function highlight(
     {
       name: 'vitepress:clean-up',
       pre(node) {
-        delete node.properties.tabindex
         delete node.properties.style
       }
     }