diff --git a/plugs/markdown/markdown_render.ts b/plugs/markdown/markdown_render.ts
index c579e605..367f2f7f 100644
--- a/plugs/markdown/markdown_render.ts
+++ b/plugs/markdown/markdown_render.ts
@@ -118,6 +118,11 @@ function render(
         name: "h5",
         body: cleanTags(mapRender(t.children!)),
       };
+    case "ATXHeading6":
+      return {
+        name: "h6",
+        body: cleanTags(mapRender(t.children!)),
+      };
     case "Paragraph":
       return {
         name: "span",