diff --git a/content/en/docs/faq.md b/content/en/docs/faq.md
index 5f8a456..54eced4 100644
--- a/content/en/docs/faq.md
+++ b/content/en/docs/faq.md
@@ -62,7 +62,11 @@ objects that report their output. The bus starts the service when a command arri
 after a minute without work, so nothing of nspawn's runs in the background
 otherwise. A package installs it; for a binary you built yourself,
 `sudo nspawn daemon --install`. Its journal is `journalctl -u nspawn.service`,
-and the interface is described in `docs/DBUS.md` of the repository.
+and the interface is described in `docs/DBUS.md` of the repository. After an
+upgrade the service keeps running the binary it started with until it goes
+idle or is restarted; a command of another version says so and asks for
+`sudo systemctl restart nspawn.service` (the rpm and the deb restart it
+themselves).
 
 ## Are the images signed?
 
diff --git a/content/en/docs/reference.md b/content/en/docs/reference.md
index fb4f0b0..8f371b2 100644
--- a/content/en/docs/reference.md
+++ b/content/en/docs/reference.md
@@ -204,8 +204,8 @@ nspawn images rm NAME...
 ```
 
 Removes local images and the layers and blobs nobody uses any more. Refuses
-the image of a running machine, or of one its restart policy is bringing back.
-Named volumes are kept. A pulled image is a machine too, so this is the same as
+the image of a running machine, or of one its restart policy is bringing back,
+and a name nothing is behind. Named volumes are kept. A pulled image is a machine too, so this is the same as
 [rm](#rm) without `--force`.
 
 ## rm
@@ -216,8 +216,9 @@ nspawn rm [-f] NAME...
 
 Removes machines, like `docker rm`: the record, the tree, the unit files, the
 boot link a restart policy made, and the layers and blobs nobody else uses.
-Every name is tried; one that cannot be removed is reported at the end. Named
-volumes are kept, and each one kept is mentioned.
+Every name is tried; one that cannot be removed, or that nothing is behind
+(`no machine or image named NAME`), is reported at the end. Named volumes are
+kept, and each one kept is mentioned.
 
 | Option | Meaning |
 | --- | --- |
diff --git a/hugo.yaml b/hugo.yaml
index a8e6596..c7af227 100644
--- a/hugo.yaml
+++ b/hugo.yaml
@@ -53,7 +53,7 @@ params:
   privacy_policy: /about/#privacy
 
   # Version of nspawn the documentation describes.
-  version: 1.5.0
+  version: 1.5.1
   archived_version: false
 
   # In-page links to open issues and suggest changes.