diff --git a/content/en/docs/reference.md b/content/en/docs/reference.md
index c4f5283..cf2d015 100644
--- a/content/en/docs/reference.md
+++ b/content/en/docs/reference.md
@@ -785,8 +785,10 @@ them, TAB completes names, asked from the service as it goes:
 | `volume rm` | the volumes |
 
 The service hands those names to any user without asking polkit, so this works
-under `sudo` and without a password; secrets are not completed. The packages
-install the completions, so this is for a binary you built yourself:
+under `sudo` and without a password; secrets are not completed. The flags come
+once the word starts with `-` (`-` brings the short forms, `--` the long ones),
+or where there is no name to offer. The packages install the completions, so
+this is for a binary you built yourself:
 
 ```shell
 nspawn completions bash > ~/.local/share/bash-completion/completions/nspawn
diff --git a/hugo.yaml b/hugo.yaml
index 0d65832..4d672ed 100644
--- a/hugo.yaml
+++ b/hugo.yaml
@@ -53,7 +53,7 @@ params:
   privacy_policy: /about/#privacy
 
   # Version of nspawn the documentation describes.
-  version: 1.9.0
+  version: 1.9.1
   archived_version: false
 
   # In-page links to open issues and suggest changes.