diff --git a/nixos/doc/manual/configuration/config-file.xml b/nixos/doc/manual/configuration/config-file.xml
index 8a1a39c98c10..2c9d42151738 100644
--- a/nixos/doc/manual/configuration/config-file.xml
+++ b/nixos/doc/manual/configuration/config-file.xml
@@ -197,10 +197,10 @@ swapDevices = [ { device = "/dev/disk/by-label/swap"; } ];
     pkgs.emacs
   ];
 
-<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql90;
+<xref linkend="opt-services.postgresql.package"/> = pkgs.postgresql10;
 </programlisting>
       The latter option definition changes the default PostgreSQL package used
-      by NixOS’s PostgreSQL service to 9.0. For more information on packages,
+      by NixOS’s PostgreSQL service to 10.x. For more information on packages,
       including how to add new ones, see <xref linkend="sec-custom-packages"/>.
      </para>
     </listitem>