diff --git a/nixos/doc/manual/release-notes/rl-2009.xml b/nixos/doc/manual/release-notes/rl-2009.xml
index 1ca172c99f1..a9a6003d1e8 100644
--- a/nixos/doc/manual/release-notes/rl-2009.xml
+++ b/nixos/doc/manual/release-notes/rl-2009.xml
@@ -103,6 +103,10 @@
       <link linkend="opt-security.duosec.secretKeyFile">security.duosec.secretKeyFile</link>
       option for better security.
     </para>
+    <para>
+      <literal>security.duosec.ikey</literal> has been renamed to
+      <link linkend="opt-security.duosec.integrationKey">security.duosec.integrationKey</link>.
+    </para>
    </listitem>
   </itemizedlist>
  </section>
diff --git a/nixos/modules/security/duosec.nix b/nixos/modules/security/duosec.nix
index 38169706463..71428b82f5d 100644
--- a/nixos/modules/security/duosec.nix
+++ b/nixos/modules/security/duosec.nix
@@ -9,7 +9,7 @@ let
 
   configFilePam = ''
     [duo]
-    ikey=${cfg.ikey}
+    ikey=${cfg.integrationKey}
     host=${cfg.host}
     ${optionalString (cfg.groups != "") ("groups="+cfg.groups)}
     failmode=${cfg.failmode}
@@ -27,6 +27,7 @@ in
 {
   imports = [
     (mkRenamedOptionModule [ "security" "duosec" "group" ] [ "security" "duosec" "groups" ])
+    (mkRenamedOptionModule [ "security" "duosec" "ikey" ] [ "security" "duosec" "integrationKey" ])
     (mkRemovedOptionModule [ "security" "duosec" "skey" ] "The insecure security.duosec.skey option has been replaced by a new security.duosec.secretKeyFile option. Use this new option to store a secure copy of your key instead.")
   ];
 
@@ -44,7 +45,7 @@ in
         description = "If enabled, protect logins with Duo Security using PAM support.";
       };
 
-      ikey = mkOption {
+      integrationKey = mkOption {
         type = types.str;
         description = "Integration key.";
       };