diff --git a/Build-Server-Virtual-Machine.md b/Build-Server-Virtual-Machine.md
index 962a686..dcd6a5e 100644
--- a/Build-Server-Virtual-Machine.md
+++ b/Build-Server-Virtual-Machine.md
@@ -1,4 +1,4 @@
-The build server virtual machine is managed by a single script named `buildVm.sh` that is in the `joeylib/scripts` folder of the JoeyLib repository.
+The build server virtual machine is managed by a single script named `buildVm.sh` that is in the `joeylib/scripts` folder of the JoeyLib repository.  It is intended to be run on a freshly installed **Ubuntu Server 20.04.x** system with `sshd` installed.  (Yes, I know 20.04.x isn't the latest LTS release.)
 
 It supports: