diff --git a/default.nix b/default.nix
index 3d1284d..a7d9fa3 100644
--- a/default.nix
+++ b/default.nix
@@ -1,80 +1,6 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, makeWrapper
-, curl
-, jq
-, python3
-, wmctrl
-, xdotool
-, gnome
-, gobject-introspection
-, wrapGAppsHook
+{
+  pkgs ? import <nixpkgs> { },
 }:
-stdenv.mkDerivation rec {
-  pname = "dzgui";
-  version = "5.3.2";
-
-  src = fetchFromGitHub {
-    owner = "aclist";
-    repo = "dztui";
-    rev = "release/${version}";
-    sha256 = "sha256-bTn5O/NhrP0zwmOlvSLofYzB6PifXYT1KCF2MErRFZo=";
-  };
-
-  postPatch = ''
-    sed -i 's@/usr/bin/zenity@zenity@g' dzgui.sh
-    sed -i '/    check_map_count/d' dzgui.sh
-    sed -i '/    check_version/d' dzgui.sh
-    sed -i '/    write_desktop_file >/d' dzgui.sh
-  '';
-
-  nativeBuildInputs = [
-    makeWrapper
-    gobject-introspection
-    wrapGAppsHook
-  ];
-
-  runtimeDeps = [
-    curl
-    jq
-    (python3.withPackages (p: with p; [
-      pygobject3
-    ]))
-
-    wmctrl
-    xdotool
-    gnome.zenity
-
-    ## Here we don't declare steam as a dependency because
-    ## we could either use the native or flatpack version
-    ## and also so this does not become a non-free package
-    # steam
-  ];
-
-  installPhase = ''
-    install -DT dzgui.sh $out/bin/dzgui
-
-    install -DT ${./dzgui.desktop} $out/share/applications/dzgui.desktop
-    install -DT images/dzgui $out/share/icons/hicolor/256x256/apps/dzgui.png
-  '';
-
-  preFixup = ''
-    gappsWrapperArgs+=(
-      --prefix PATH ':' ${lib.makeBinPath runtimeDeps}
-    )
-  '';
-
-  meta = with lib; {
-    homepage = "https://github.com/pronovic/banner";
-    description = "DayZ TUI/GUI server browser";
-    license = licenses.gpl3;
-
-    longDescription = ''
-      DZGUI allows you to connect to both official and modded/community DayZ
-      servers on Linux and provides a graphical interface for doing so.
-    '';
-
-    platforms = platforms.all;
-  };
+{
+  dzgui = pkgs.callPackage ./package { };
 }
diff --git a/flake.nix b/flake.nix
index 4c315d0..22359e7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,7 @@
 
       overlays = {
         default = (final: _: {
-          dzgui = (final.callPackage ./. { });
+          dzgui = (final.callPackage ./package { });
         });
       };
 
diff --git a/package/default.nix b/package/default.nix
new file mode 100644
index 0000000..8d38801
--- /dev/null
+++ b/package/default.nix
@@ -0,0 +1,80 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, makeWrapper
+, curl
+, jq
+, python3
+, wmctrl
+, xdotool
+, gnome
+, gobject-introspection
+, wrapGAppsHook
+}:
+stdenv.mkDerivation rec {
+  pname = "dzgui";
+  version = "5.3.1";
+
+  src = fetchFromGitHub {
+    owner = "aclist";
+    repo = "dztui";
+    rev = "8e6cf7e7925c6e6bc390a10d286ba1e7b2562d08";
+    sha256 = "sha256-+FlAYTDpjDDmCAFxgmgHVnXGcIw63e5ia38zKbYI2ZI=";
+  };
+
+  postPatch = ''
+    sed -i 's@/usr/bin/zenity@zenity@g' dzgui.sh
+    sed -i '/    check_map_count/d' dzgui.sh
+    sed -i '/    check_version/d' dzgui.sh
+    sed -i '/    write_desktop_file >/d' dzgui.sh
+  '';
+
+  nativeBuildInputs = [
+    makeWrapper
+    gobject-introspection
+    wrapGAppsHook
+  ];
+
+  runtimeDeps = [
+    curl
+    jq
+    (python3.withPackages (p: with p; [
+      pygobject3
+    ]))
+
+    wmctrl
+    xdotool
+    gnome.zenity
+
+    ## Here we don't declare steam as a dependency because
+    ## we could either use the native or flatpack version
+    ## and also so this does not become a non-free package
+    # steam
+  ];
+
+  installPhase = ''
+    install -DT dzgui.sh $out/bin/dzgui
+
+    install -DT ${./dzgui.desktop} $out/share/applications/dzgui.desktop
+    install -DT images/dzgui $out/share/icons/hicolor/256x256/apps/dzgui.png
+  '';
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --prefix PATH ':' ${lib.makeBinPath runtimeDeps}
+    )
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/pronovic/banner";
+    description = "DayZ TUI/GUI server browser";
+    license = licenses.gpl3;
+
+    longDescription = ''
+      DZGUI allows you to connect to both official and modded/community DayZ
+      servers on Linux and provides a graphical interface for doing so.
+    '';
+
+    platforms = platforms.all;
+  };
+}
diff --git a/dzgui.desktop b/package/dzgui.desktop
similarity index 100%
rename from dzgui.desktop
rename to package/dzgui.desktop
diff --git a/package/update.sh b/package/update.sh
new file mode 100755
index 0000000..880a8f4
--- /dev/null
+++ b/package/update.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl jq ripgrep common-updater-scripts
+
+set -xe
+
+latest_commit="$(
+  curl -L -s ${GITHUB_TOKEN:+-u ":${GITHUB_TOKEN}"} https://api.github.com/repos/aclist/dztui/branches/master \
+  | jq -r .commit.sha
+)"
+
+version="$(
+  curl https://raw.githubusercontent.com/aclist/dztui/$latest_commit/dzgui.sh \
+  | rg '^version=(.*)$' --replace '$1'
+)"
+
+update-source-version dzgui "$version" --rev=$latest_commit