diff --git a/website/docs/source/v2/provisioning/salt.html.md b/website/docs/source/v2/provisioning/salt.html.md
index 4e832fb8e..8bb012aa7 100644
--- a/website/docs/source/v2/provisioning/salt.html.md
+++ b/website/docs/source/v2/provisioning/salt.html.md
@@ -65,6 +65,7 @@ you can specify a branch, tag, or any treeish. Not supported on Windows.
 * `always_install`   (boolean) - Installs salt binaries even
  if they are already detected, default `false`
 
+* `bootstrap_script` (string) - Path to your customized salt-bootstrap.sh script.
 
 * `bootstrap_options` (string) - Additional command-line options to
   pass to the bootstrap script.