diff --git a/nixos/doc/manual/release-notes/rl-2009.xml b/nixos/doc/manual/release-notes/rl-2009.xml
index 486e527776ef..d9ff51ae3df0 100644
--- a/nixos/doc/manual/release-notes/rl-2009.xml
+++ b/nixos/doc/manual/release-notes/rl-2009.xml
@@ -849,6 +849,13 @@ CREATE ROLE postgres LOGIN SUPERUSER;
      functionally redundent.
     </para>
    </listitem>
+   <listitem>
+    <para>
+     The <literal>hardware.nvidia.optimus_prime.enable</literal> service has been renamed to
+     <literal>hardware.nvidia.prime.sync.enable</literal> and has many new enhancements.
+     Related nvidia prime settings may have also changed.
+    </para>
+   </listitem>
    <listitem>
     <para>
      The package <package>nextcloud17</package> has been removed and <package>nextcloud18</package> was marked as insecure