diff --git a/flake.lock b/flake.lock
index 655e7bb..98cf261 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,5 +1,20 @@
 {
   "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "naked-shell": {
       "locked": {
         "lastModified": 1681286841,
@@ -66,9 +81,31 @@
         "naked-shell": "naked-shell",
         "nixpkgs": "nixpkgs",
         "parts": "parts",
+        "sbt-derivation": "sbt-derivation",
         "systems": "systems"
       }
     },
+    "sbt-derivation": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1698464090,
+        "narHash": "sha256-Pnej7WZIPomYWg8f/CZ65sfW85IfIUjYhphMMg7/LT0=",
+        "owner": "zaninime",
+        "repo": "sbt-derivation",
+        "rev": "6762cf2c31de50efd9ff905cbcc87239995a4ef9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zaninime",
+        "repo": "sbt-derivation",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1680978846,
diff --git a/flake.nix b/flake.nix
index 6e52882..309b187 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,8 @@
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
   inputs.systems.url = "github:nix-systems/x86_64-linux";
   inputs.naked-shell.url = "github:yusdacra/mk-naked-shell";
+  inputs.sbt-derivation.url = "github:zaninime/sbt-derivation";
+  inputs.sbt-derivation.inputs.nixpkgs.follows = "nixpkgs";
 
   outputs = inp:
     inp.parts.lib.mkFlake {inputs = inp;} {
@@ -12,9 +14,10 @@
       ];
       perSystem = {
         config,
-        pkgs,
+        system,
         ...
       }: let
+        pkgs = inp.nixpkgs.legacyPackages.${system}.appendOverlays [inp.sbt-derivation.overlays.default];
         packageJson = builtins.fromJSON (builtins.readFile ./package.json);
       in {
         devShells.default = config.mk-naked-shell.lib.mkNakedShell {
@@ -84,6 +87,35 @@
             runHook postInstall
           '';
         };
+        packages.guestbook-jar = pkgs.mkSbtDerivation rec {
+          pname = "guestbook";
+          version = "0.0.1-jar";
+          depsSha256 = "sha256-hIGZTEZpqgBuo6VGgZ6dQd5kK0RLVNy5REVBBYA3Gak=";
+          src = ./guestbook;
+          buildPhase = ''
+            sbt assembly
+            mkdir -p ./target/graalvm-native-image
+          '';
+          installPhase = ''
+            mkdir -p $out
+            cp target/scala-3.4.2/${pname}-assembly-0.0.1-SNAPSHOT.jar $out/${pname}.jar
+          '';
+          nativeBuildInputs = [
+            pkgs.graalvm-ce
+          ];
+        };
+        packages.guestbook = pkgs.stdenv.mkDerivation rec {
+          inherit (config.packages.guestbook-jar) pname nativeBuildInputs;
+          version = "0.0.1";
+          src = config.packages.guestbook-jar;
+          buildPhase = ''
+            native-image -H:+ReportExceptionStackTraces -H:+AddAllCharsets --allow-incomplete-classpath --no-fallback --initialize-at-run-time --enable-http --enable-all-security-services --verbose -jar "./${pname}.jar" ./${pname}
+          '';
+          installPhase = ''
+            mkdir -p $out/bin
+            cp ${pname} $out/bin/${pname}
+          '';
+        };
         packages.default = config.packages.gazesys;
       };
     };