diff --git a/README.md b/README.md
index aee29a5..b6992a5 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ sudo emerge -a qemu python:3.4 pip # for Gentoo
 ```
 
 ## Step 1
-Run `jumpstart.sh` to download installation media for macOS (internet required). The default installation uses Catalina, but you can choose which version to get by adding either `--high-sierra`, `--mojave`, or `--catalina`. For example:
+Run `jumpstart.sh` to download installation media for macOS (internet required). The default installation uses Catalina, but you can choose which version to get by adding either `--high-sierra`, `--mojave`, `--catalina` or `--big-sur`. For example:
 ```
 ./jumpstart.sh --mojave
 ```