diff --git a/nixos/doc/manual/release-notes/rl-2009.xml b/nixos/doc/manual/release-notes/rl-2009.xml
index 955c19bd98e..3b73f388da2 100644
--- a/nixos/doc/manual/release-notes/rl-2009.xml
+++ b/nixos/doc/manual/release-notes/rl-2009.xml
@@ -277,6 +277,9 @@ environment.systemPackages = [
   <title>Other Notable Changes</title>
 
   <itemizedlist>
+   <listitem>
+     <para>SD and ISO images are now compressed by default using <literal>zstd</literal>.</para>
+   </listitem>
    <listitem>
     <para>
      <option>services.journald.rateLimitBurst</option> was updated from