diff --git a/3.3-Updater-Scripts.md b/3.3-Updater-Scripts.md
index b68d4ec..55cbf78 100644
--- a/3.3-Updater-Scripts.md
+++ b/3.3-Updater-Scripts.md
@@ -53,6 +53,7 @@ Deprecated Arguments (they still work for now):
 !! Unicode encoded override files should be stored without the BOM header !!
 
 Available command-line parameters (case-insensitive):
+- `-RFPalts` activate RFP Alternatives section **(new in v4.9)**.
 - `-esr` activate ESR-related preferences **(new in v4.8)**.
 - `-MultiOverrides`
 use any and all .js files in a `user.js-overrides` sub-folder as overrides instead of the default `user-overrides.js` file. Files are appended in alphabetical order.