diff --git a/nixos/modules/services/x11/desktop-managers/pantheon.xml b/nixos/modules/services/x11/desktop-managers/pantheon.xml
index 3ae43b074ff2..fe0a1c496223 100644
--- a/nixos/modules/services/x11/desktop-managers/pantheon.xml
+++ b/nixos/modules/services/x11/desktop-managers/pantheon.xml
@@ -105,8 +105,14 @@ switchboard-with-plugs.override {
     </term>
     <listitem>
      <para>
-      AppCenter has been available since 20.03, but it is of little use. This is because there is no functioning PackageKit backend for Nix 2.0. In the near future you will be able to install Flatpak applications from AppCenter on NixOS. See this <link xlink:href="https://github.com/NixOS/nixpkgs/issues/70214">issue</link>.
+      AppCenter has been available since 20.03, but it is of little use. This is because there is no functioning PackageKit backend for Nix 2.0. Starting from 21.11, the Flatpak backend should work so you can install some Flatpak applications using it. See this <link xlink:href="https://github.com/NixOS/nixpkgs/issues/70214">issue</link>.
      </para>
+     <para>
+      To use AppCenter on NixOS, add <literal>pantheon.appcenter</literal> to <xref linkend="opt-environment.systemPackages" />, <link linkend="module-services-flatpak">enable Flatpak support</link> and optionally add the <literal>appcenter</literal> Flatpak remote:
+     </para>
+<screen>
+<prompt>$ </prompt>flatpak remote-add --if-not-exists appcenter https://flatpak.elementary.io/repo.flatpakrepo
+</screen>
     </listitem>
    </varlistentry>
   </variablelist>