diff --git a/nixos/doc/manual/release-notes/rl-1709.xml b/nixos/doc/manual/release-notes/rl-1709.xml
index 91681cc6949f..88b28c291184 100644
--- a/nixos/doc/manual/release-notes/rl-1709.xml
+++ b/nixos/doc/manual/release-notes/rl-1709.xml
@@ -176,6 +176,14 @@ rmdir /var/lib/ipfs/.ipfs
       removed. The system support had been broken for several years.
     </para>
   </listitem>
+  <listitem>
+    <para>
+      Touchpad support should now be enabled through
+      <literal>libinput</literal> as <literal>synaptics</literal> is
+      now deprecated. See the option
+      <literal>services.xserver.libinput.enable</literal>.
+    </para>
+  </listitem>
 </itemizedlist>
 
 <para>Other notable improvements:</para>
diff --git a/nixos/modules/services/x11/hardware/synaptics.nix b/nixos/modules/services/x11/hardware/synaptics.nix
index 54454c736c1d..f032c5938852 100644
--- a/nixos/modules/services/x11/hardware/synaptics.nix
+++ b/nixos/modules/services/x11/hardware/synaptics.nix
@@ -29,7 +29,7 @@ in {
       enable = mkOption {
         type = types.bool;
         default = false;
-        description = "Whether to enable touchpad support.";
+        description = "Whether to enable touchpad support. Deprecated: Consider services.xserver.libinput.enable.";
       };
 
       dev = mkOption {