diff --git a/nixos/modules/i18n/input-method/default.xml b/nixos/modules/i18n/input-method/default.xml
index c55ac1ec245..a32ed100df3 100644
--- a/nixos/modules/i18n/input-method/default.xml
+++ b/nixos/modules/i18n/input-method/default.xml
@@ -88,6 +88,8 @@ i18n.inputMethod = {
       methods among Traditional Chinese Unix users.</para></listitem>
   <listitem><para>Hangul (<literal>fcitx-engines.hangul</literal>): Korean input 
       method.</para></listitem>
+  <listitem><para>Unikey (<literal>fcitx-engines.unikey</literal>): Vietnamese input 
+      method.</para></listitem>
   <listitem><para>m17n (<literal>fcitx-engines.m17n</literal>): m17n is an input 
       method that uses input methods and corresponding icons in the m17n 
       database.</para></listitem>
diff --git a/pkgs/tools/inputmethods/fcitx-engines/fcitx-unikey/default.nix b/pkgs/tools/inputmethods/fcitx-engines/fcitx-unikey/default.nix
new file mode 100644
index 00000000000..b2cd71d1816
--- /dev/null
+++ b/pkgs/tools/inputmethods/fcitx-engines/fcitx-unikey/default.nix
@@ -0,0 +1,31 @@
+{ stdenv, fetchurl, cmake, fcitx, gettext, pkgconfig }:
+
+stdenv.mkDerivation rec {
+  name = "fcitx-unikey-${version}";
+  version = "0.2.5";
+
+  src = fetchurl {
+    url = "http://download.fcitx-im.org/fcitx-unikey/${name}.tar.xz";
+    sha256 = "063vc29v7ycaai98v3z4q319sv9sm91my17pmhblw1vifxnw02wf";
+  };
+
+  buildInputs = [ cmake fcitx gettext pkgconfig ];
+
+  preInstall = ''
+    substituteInPlace src/cmake_install.cmake \
+      --replace ${fcitx} $out
+    substituteInPlace data/cmake_install.cmake \
+      --replace ${fcitx} $out
+  '';
+  
+  meta = with stdenv.lib; {
+    isFcitxEngine = true;
+    homepage      = "https://github.com/fcitx/fcitx-unikey";
+    downloadPage  = "http://download.fcitx-im.org/fcitx-table-other/";
+    description   = "Fcitx wrapper for unikey";
+    license       = licenses.gpl3Plus;
+    platforms     = platforms.linux;
+    maintainers   = with maintainers; [ ericsagnes ];
+  };
+
+}
\ No newline at end of file
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0c36ac2e2db..a3fa19f57b3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1528,6 +1528,8 @@ in
 
     hangul = callPackage ../tools/inputmethods/fcitx-engines/fcitx-hangul { };
 
+    unikey = callPackage ../tools/inputmethods/fcitx-engines/fcitx-unikey { };
+    
     m17n = callPackage ../tools/inputmethods/fcitx-engines/fcitx-m17n { };
 
     mozc = callPackage ../tools/inputmethods/fcitx-engines/fcitx-mozc {