diff --git a/cloud/openstack/os_server.py b/cloud/openstack/os_server.py
index 5d881395d79..0f2f5ae0ef0 100644
--- a/cloud/openstack/os_server.py
+++ b/cloud/openstack/os_server.py
@@ -172,6 +172,7 @@ options:
         - Arbitrary key/value pairs to the scheduler for custom use
      required: false
      default: None
+     version_added: "2.1"
    state:
      description:
        - Should the resource be present or absent.