diff --git a/docs/builders/iso/xenserver-iso.html.markdown b/docs/builders/iso/xenserver-iso.html.markdown
index c452add..d8638c0 100644
--- a/docs/builders/iso/xenserver-iso.html.markdown
+++ b/docs/builders/iso/xenserver-iso.html.markdown
@@ -207,6 +207,8 @@ each category, the available options are alphabetized and described.
 * `vm_memory` (integer) - The size, in megabytes, of the amount of memory to
   allocate for the VM. By default, this is 1024 (1 GB).
 
+* `vm_tags` (array of strings) - A list of tags to add to the VM
+
 ## Differences with other Packer builders
 
 Currently the XenServer builder has some quirks when compared with other Packer builders.