diff --git a/default.nix b/default.nix
index f447cb5..83596ab 100644
--- a/default.nix
+++ b/default.nix
@@ -3,6 +3,8 @@ self: super:
 {
   buildNimblePackage = super.callPackage ./pkgs/nim-packages/generic.nix { };
 
+  cadet-gtk = super.callPackage ./pkgs/cadet-gtk/default.nix { };
+
   c2nim = super.callPackage ./pkgs/nim-packages/c2nim.nix { };
 
   freetz-tools = super.callPackage ./pkgs/freetz-tools/default.nix { };
diff --git a/pkgs/cadet-gtk/default.nix b/pkgs/cadet-gtk/default.nix
new file mode 100644
index 0000000..24567b9
--- /dev/null
+++ b/pkgs/cadet-gtk/default.nix
@@ -0,0 +1,47 @@
+{ stdenv
+, cmake
+, fetchFromGitLab
+, jansson
+, libextractor
+, libgcrypt
+, libhandy
+, gnunet
+, gtk3
+, pkgconfig
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "cadet-gtk";
+  version = "0.5.0";
+
+  src = fetchFromGitLab {
+    owner = "TheJackiMonster";
+    repo = "cadet-gtk";
+    rev = "v${version}";
+    sha256 = "09a3ga5gfvrdq0z4325p7ndb78mg3lkc021c8bhkf6dxd76qm7r5";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    pkgconfig
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    jansson
+    libextractor
+    libgcrypt
+    libhandy
+    gnunet
+    gtk3
+  ];
+
+  meta = with stdenv.lib; {
+    description = "A GTK based GUI for the CADET subsystem of GNUnet.";
+    homepage = https://gitlab.com/TheJackiMonster/cadet-gtk;
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ royneary ];
+    platforms = platforms.linux;
+  };
+}