diff --git a/docs/releases/v0.20.0.md b/docs/releases/v0.20.0.md
index b57ac982..e0ede183 100644
--- a/docs/releases/v0.20.0.md
+++ b/docs/releases/v0.20.0.md
@@ -36,13 +36,22 @@ Every library entry can now carry **platform, description, developer, publisher,
 
 ## New: install and update the Windows host with winget
 
-Windows had **no update path at all** — no self-update, no package manager — so keeping a host current meant noticing that a release had happened and re-running an installer by hand. Now, after adding Punktfunk's package source once:
+Windows had **no update path at all** — no self-update, no package manager — so keeping a host current meant noticing that a release had happened and re-running an installer by hand. Now it is two commands.
+
+Punktfunk lives in **its own package source**, not the public winget catalogue, so add that first. Once per machine, from an **Administrator** terminal:
+
+```
+winget source add -n punktfunk https://winget.punktfunk.unom.io -t Microsoft.Rest
+```
+
+Then install, and from then on upgrade:
 
 ```
 winget install unom.PunktfunkHost
+winget upgrade unom.PunktfunkHost
 ```
 
-and `winget upgrade` from then on. The source is ours rather than the public catalogue, and it knows about every release, so you can pin an older version or upgrade from one.
+**If you skip the first command, `winget install unom.PunktfunkHost` will tell you no package was found** — winget only searches the sources it knows about, and Punktfunk is not in the public one. The source knows about every release, so you can also pin an older version with `--version` or upgrade from one.
 
 A silent install shows you the same disclosures the wizard does — including where the bundled virtual audio device comes from — and takes the same defaults the wizard offers, so installing without a screen doesn't quietly get you a different machine.