diff --git a/pkgs/by-name/fi/firefly-iii-data-importer/package.nix b/pkgs/by-name/fi/firefly-iii-data-importer/package.nix
new file mode 100644
index 000000000000..d647783f7381
--- /dev/null
+++ b/pkgs/by-name/fi/firefly-iii-data-importer/package.nix
@@ -0,0 +1,91 @@
+{
+  lib,
+  fetchFromGitHub,
+  stdenvNoCC,
+  nodejs,
+  fetchNpmDeps,
+  buildPackages,
+  php83,
+  nixosTests,
+  nix-update-script,
+  dataDir ? "/var/lib/firefly-iii-data-importer",
+}:
+
+let
+  pname = "firefly-iii-data-importer";
+  version = "1.5.4";
+
+  src = fetchFromGitHub {
+    owner = "firefly-iii";
+    repo = "data-importer";
+    rev = "v${version}";
+    hash = "sha256-XnPdoNtUoJpOpKVzQlFirh7u824H4xKAe2VRXfGIKeg=";
+  };
+in
+
+stdenvNoCC.mkDerivation (finalAttrs: {
+  inherit pname src version;
+
+  buildInputs = [ php83 ];
+
+  nativeBuildInputs = [
+    nodejs
+    nodejs.python
+    buildPackages.npmHooks.npmConfigHook
+    php83.composerHooks.composerInstallHook
+    php83.packages.composer-local-repo-plugin
+  ];
+
+  composerNoDev = true;
+  composerNoPlugins = true;
+  composerNoScripts = true;
+  composerStrictValidation = true;
+  strictDeps = true;
+
+  vendorHash = "sha256-EjEco8zBR787eQuPhNsRScfuPQ6eS6TIJmMJOcmZA+Q=";
+
+  npmDeps = fetchNpmDeps {
+    inherit src;
+    name = "${pname}-npm-deps";
+    hash = "sha256-VP1wM0+ca17aQU4FJ9gSbT2Np/sxb8wZ4pCJ6FV1V7w=";
+  };
+
+  composerRepository = php83.mkComposerRepository {
+    inherit (finalAttrs)
+      pname
+      src
+      vendorHash
+      version
+      ;
+    composerNoDev = true;
+    composerNoPlugins = true;
+    composerNoScripts = true;
+    composerStrictValidation = true;
+  };
+
+  preInstall = ''
+    npm run build --workspace=v2
+  '';
+
+  passthru = {
+    phpPackage = php83;
+    tests = nixosTests.firefly-iii-data-importer;
+    updateScript = nix-update-script { };
+  };
+
+  postInstall = ''
+    rm -R $out/share/php/firefly-iii-data-importer/{storage,bootstrap/cache,node_modules}
+    mv $out/share/php/firefly-iii-data-importer/* $out/
+    rm -R $out/share
+    ln -s ${dataDir}/storage $out/storage
+    ln -s ${dataDir}/cache $out/bootstrap/cache
+  '';
+
+  meta = {
+    changelog = "https://github.com/firefly-iii/data-importer/releases/tag/v${version}";
+    description = "Firefly III Data Importer can import data into Firefly III.";
+    homepage = "https://github.com/firefly-iii/data-importer";
+    license = lib.licenses.agpl3Only;
+    maintainers = [ lib.maintainers.savyajha ];
+  };
+})