diff --git a/src/node/markdown/markdown.ts b/src/node/markdown/markdown.ts
index 1186d243..89cec735 100644
--- a/src/node/markdown/markdown.ts
+++ b/src/node/markdown/markdown.ts
@@ -91,6 +91,7 @@ export const createMarkdownRenderer = async (
       slugify,
       level: [2, 3],
       format: parseHeader,
+      listType: 'ul',
       ...options.toc
     })
     .use(emoji)