diff --git a/hswg/main.go b/hswg/main.go
index 458fe87..dca9fea 100644
--- a/hswg/main.go
+++ b/hswg/main.go
@@ -193,6 +193,9 @@ func renderEntry(name string, e *Entry) error {
 	if html, e.Metadata, err = Render(f, configuration.NewConfiguration(
 		configuration.WithFilename(e.PathSource),
 		configuration.WithLastUpdated(e.mtime),
+		configuration.WithAttribute("toc", "preamble"),
+		configuration.WithAttribute("toc-title", "+++<h2>Contents</h2>+++"),
+		configuration.WithAttribute("source-highlighter", "chroma"),
 	)); err != nil {
 		return err
 	}