diff --git a/pkgs/tools/networking/network-manager/iodine.nix b/pkgs/tools/networking/network-manager/iodine.nix
index 9e6ba581a946..cbc0e6e6d2d1 100644
--- a/pkgs/tools/networking/network-manager/iodine.nix
+++ b/pkgs/tools/networking/network-manager/iodine.nix
@@ -1,14 +1,14 @@
 { stdenv, fetchurl, iodine, intltool, pkgconfig, networkmanager, libsecret
 , withGnome ? true, gnome3 }:
 
-stdenv.mkDerivation rec {
-  name    = "${pname}${if withGnome then "-gnome" else ""}-${version}";
+let
   pname   = "NetworkManager-iodine";
-  major   = "1.2";
-  version = "${major}.0";
+  version = "1.2.0";
+in stdenv.mkDerivation rec {
+  name    = "${pname}${if withGnome then "-gnome" else ""}-${version}";
 
   src = fetchurl {
-    url    = "mirror://gnome/sources/${pname}/${major}/${pname}-${version}.tar.xz";
+    url    = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
     sha256 = "0njdigakidji6mfmbsp8lfi8wl88z1dk8cljbva2w0xazyddbwyh";
   };
 
@@ -32,6 +32,13 @@ stdenv.mkDerivation rec {
        --replace "/usr/bin/iodine" "${iodine}/bin/iodine"
   '';
 
+  passthru = {
+    updateScript = gnome3.updateScript {
+      packageName = pname;
+      attrPath = "networkmanager-iodine";
+    };
+  };
+
   meta = {
     description = "NetworkManager's iodine plugin";
     inherit (networkmanager.meta) maintainers platforms;