diff --git a/nix/package.nix b/nix/package.nix
index 112904e..0aa0397 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -9,7 +9,7 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "troutbot";
-  version = "0-unstable-2026-01-30";
+  version = "0-unstable-2026-02-01";
 
   src = lib.fileset.toSource {
     root = ../.;
@@ -19,6 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
       ../package.json
       ../pnpm-lock.yaml
       ../tsconfig.json
+      ../tsup.config.ts
     ];
   };
 
diff --git a/tsup.config.ts b/tsup.config.ts
new file mode 100644
index 0000000..9a00182
--- /dev/null
+++ b/tsup.config.ts
@@ -0,0 +1,16 @@
+import { defineConfig } from 'tsup';
+
+export default defineConfig({
+  entry: ['src/index.ts'],
+  format: 'cjs',
+  dts: true,
+  clean: true,
+
+  // Bundle all dependencies into the output so it works without node_modules
+  // Required for Nix packaging where node_modules are not available at runtime
+  noExternal: ['jiti', 'dotenv', 'express', 'express-rate-limit', '@octokit/rest', 'winston'],
+
+  // Ensure all dependencies are resolved
+  platform: 'node',
+  target: 'node22',
+});