diff --git a/config/_default/markup.toml b/config/_default/markup.toml
index 7661f1c..d876d33 100644
--- a/config/_default/markup.toml
+++ b/config/_default/markup.toml
@@ -8,8 +8,14 @@
     [goldmark.extensions.extras]
       [goldmark.extensions.extras.delete]
         enable = true
+      [goldmark.extensions.extras.insert]
+        enable = true
+      [goldmark.extensions.extras.mark]
+        enable = true
       [goldmark.extensions.extras.subscript]
         enable = true
+      [goldmark.extensions.extras.superscript]
+        enable = true
 
   [goldmark.renderer]
     unsafe = true