diff --git a/nixos/doc/manual/release-notes/rl-2105.xml b/nixos/doc/manual/release-notes/rl-2105.xml
index da916161d97..52bc501c100 100644
--- a/nixos/doc/manual/release-notes/rl-2105.xml
+++ b/nixos/doc/manual/release-notes/rl-2105.xml
@@ -195,6 +195,12 @@
      The <option>security.hideProcessInformation</option> module has been removed.
      It was broken since the switch to cgroups-v2.
     </para>
+   </listitem>
+   <listitem>
+    <para>
+      The <literal>linuxPackages.ati_drivers_x11</literal> kernel modules have been removed.
+     The drivers only supported kernels prior to 4.2, and thus have become obsolete.
+    </para>
    </listitem>
     <listitem>
       <para>