diff --git a/README.md b/README.md
index 1d779d6..a945b12 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,12 @@ theme = "lightspeed"
 
 Posts should be placed directly in the `content` folder.
 
+To sort the post index by date, enable sort in your index section `content/_index.md`:
+
+```toml
+sort_by = "date"
+```
+
 ## Options
 
 ### Title