diff --git a/README.asciidoc b/README.asciidoc
index e474363..7d6aa31 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -427,6 +427,13 @@ The following options can be overridden on a per-instance basis:
     but some systems have this instead in `$HOME/.steam/logs/workshop_log.txt`.
     You will need to modify this setting if this is the case.
 
+`steamdataroot`::
+    The path to the SteamCMD data.
+    Defaults to equal `$steamcmdroot`
+    Some SteamCMD installations store downloaded files (workshop
+    files, etc.) in /home/.steam instead of in the steamcmd
+    directory.
+
 `arkserverexec`::
     The relative path within an ARK server install where the
     ARK server executable can be found.