diff --git a/config/_default/hugo.toml b/config/_default/hugo.toml
index 68b8f4a..b864e69 100644
--- a/config/_default/hugo.toml
+++ b/config/_default/hugo.toml
@@ -27,6 +27,7 @@ enableInlineShortcodes = true
   [outputFormats.rss]
     mediatype = "application/rss"
     baseName = "feed"
+  # gemini output
   [outputFormats.gemini]
     mediatype = "text/gemini"
     isPlainText = true