diff --git a/flake.nix b/flake.nix
index 0f8fb2f..b75fe8f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,7 +14,7 @@
   {
     packages.default = pkgs.stdenv.mkDerivation {
       pname = "info.belastodon.social";
-      version = "0.1.0";
+      version = "0.2.0";
       src = self;
 
       nativeBuildInputs = [ (pkgs.emacsPackages.emacsWithPackages (epkgs: [ epkgs.org ])) ];
@@ -28,5 +28,12 @@
         cp -r public/* $out/
       '';
     };
+
+    apps.default = {
+      type = "app";
+      program = toString (pkgs.writeShellScript "preview-server" ''
+        ${pkgs.python3}/bin/python3 -m http.server 8000 --directory ${self.packages.${system}.default}
+      '');
+    };
   });
 }