diff --git a/README.md b/README.md
index 09e73ba..eb7c590 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ In addition to the host, you will want to pre-install the following packages:
 * squashfs-tools
 * unzip
 
-``` % sudo apt install build-essential debootstrap git squashfs-tools unzip```
+``` % sudo apt install build-essential debootstrap git squashfs-tools unzip xorriso```
 
 ## Usage