diff --git a/pkgs/by-name/ni/nitrokey-trng-rs232-firmware/package.nix b/pkgs/by-name/ni/nitrokey-trng-rs232-firmware/package.nix
new file mode 100644
index 000000000000..dea4e7e1dbf9
--- /dev/null
+++ b/pkgs/by-name/ni/nitrokey-trng-rs232-firmware/package.nix
@@ -0,0 +1,45 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  pkgsCross,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "nitrokey-trng-rs232-firmware";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
+    owner = "Nitrokey";
+    repo = "nitrokey-trng-rs232-firmware";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-vY/9KAGB6lTkkjW9zUiHA3wD2d35cEBVBTr12bHCy4k=";
+  };
+
+  nativeBuildInputs = [ pkgsCross.avr.stdenv.cc ];
+
+  sourceRoot = "source/src";
+
+  makeFlags = [ "all" ];
+
+  installPhase = ''
+    runHook preInstall
+    install -D TRNGSerial.bin $out/TRNGSerial.bin
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Firmware for the Nitrokey TRNG RS232 device";
+    longDescription = ''
+      This package does not provide an executable. It should be built using `nix-build -A nitrokey-trng-rs232-firmware` or `nix build nixpkgs#nitrokey-trng-rs232-firmware` and flashed using `libnitrokey`
+    '';
+    homepage = "https://github.com/Nitrokey/nitrokey-trng-rs232-firmware";
+    license = lib.licenses.gpl3Plus;
+    maintainers = with lib.maintainers; [
+      amerino
+      imadnyc
+      kiike
+    ];
+    platforms = lib.platforms.linux;
+  };
+})