diff --git a/.drone.jsonnet b/.drone.jsonnet
index fefec26..ecbbc49 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -16,8 +16,8 @@ local lint_step = {
 
 local build_step = {
     name: "build",
-    image: bun_image,
-    commands: ["bun run build"],
+    image: node_image,
+    commands: ["npm run build"],
 };
 
 local pack_step = {
diff --git a/bun.lockb b/bun.lockb
index 77b93b1..fc16060 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index 6cd1b12..4e3bcd1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@thilawyn/traitify-ts",
-  "version": "0.1.16",
+  "version": "0.1.17",
   "type": "module",
   "publishConfig": {
     "registry": "https://git.jvalver.de/api/packages/thilawyn/npm/"
@@ -11,8 +11,8 @@
   "exports": {
     ".": {
       "import": {
-        "types": "./dist/lib.d.mts",
-        "default": "./dist/lib.mjs"
+        "types": "./dist/lib.d.ts",
+        "default": "./dist/lib.js"
       },
       "require": {
         "types": "./dist/lib.d.cts",
@@ -21,7 +21,7 @@
     }
   },
   "scripts": {
-    "build": "rollup -c rollup.config.ts",
+    "build": "tsup",
     "lint:tsc": "tsc --noEmit",
     "clean:cache": "rm -f tsconfig.tsbuildinfo",
     "clean:dist": "rm -rf dist",
@@ -32,14 +32,11 @@
     "type-fest": "^4.13.1"
   },
   "devDependencies": {
-    "@rollup/plugin-node-resolve": "^15.2.3",
     "@types/lodash-es": "^4.17.12",
     "bun-types": "latest",
     "npm-check-updates": "^16.14.17",
     "npm-sort": "^0.0.4",
-    "rollup": "^4.13.0",
-    "rollup-plugin-cleanup": "^3.2.1",
-    "rollup-plugin-ts": "^3.4.5",
+    "tsup": "^8.0.2",
     "tsx": "^4.7.1",
     "typescript": "^5.4.3"
   }
diff --git a/rollup.config.ts b/rollup.config.ts
deleted file mode 100644
index a9e1bd7..0000000
--- a/rollup.config.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-import { nodeResolve } from "@rollup/plugin-node-resolve"
-import { defineConfig } from "rollup"
-import cleanup from "rollup-plugin-cleanup"
-import ts from "rollup-plugin-ts"
-import pkg from "./package.json" assert { type: "json" }
-
-
-export const createBundleConfig = (
-    input:  string,
-    name:   keyof typeof pkg.exports,
-) => (
-    defineConfig({
-        input,
-
-        output: [
-            {
-                file:    pkg.exports[name].import.default,
-                format:  "esm",
-            },
-            {
-                file:    pkg.exports[name].require.default,
-                format:  "cjs",
-            },
-        ],
-
-        external: id => !/^[./]/.test(id),
-
-        plugins: [
-            nodeResolve(),
-            ts(),
-
-            cleanup({
-                comments: "jsdoc",
-                extensions: ["ts"],
-            }),
-        ],
-    })
-)
-
-
-export default [
-    createBundleConfig("src/lib.ts", "."),
-]
diff --git a/tsconfig.json b/tsconfig.json
index 5470793..c8b2ea9 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,7 +8,7 @@
     // "allowImportingTsExtensions": true,
     // "noEmit": true,
     "declaration": true,
-    "composite": true,
+    // "composite": true,
     "strict": true,
     "downlevelIteration": true,
     "skipLibCheck": true,
diff --git a/tsup.config.ts b/tsup.config.ts
new file mode 100644
index 0000000..2f051ef
--- /dev/null
+++ b/tsup.config.ts
@@ -0,0 +1,11 @@
+import { defineConfig } from "tsup"
+
+
+export default defineConfig({
+    entry: ["src/lib.ts"],
+    format: ["esm", "cjs"],
+    dts: true,
+    splitting: false,
+    sourcemap: true,
+    clean: true,
+})