diff --git a/package.json b/package.json
index 85ce1b7..c1bc720 100644
--- a/package.json
+++ b/package.json
@@ -1,16 +1,21 @@
 {
   "name": "interval-bins",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/plantinformatics/interval-bins.git"
   },
   "description": "binEvenLengthRound() : Calculate the bin size for even-sized bins to span the given interval. binBoundaries() : Generate an array of even-sized bins to span the given interval.",
-  "main": "src/index.js",
+  "type": "module",
+  "main": "main.js",
   "browser": "dist/interval-bins.js",
   "exports": {
-    "import": "./dist/interval-bins.js",
-    "require": "./src/index.js"
+    ".": {
+      "import": "./dist/interval-bins.mjs",
+      "require": "./dist/interval-bins.cjs"
+    },
+    "./dist/interval-bins.mjs": "./dist/interval-bins.mjs",
+    "./dist/interval-bins.cjs": "./dist/interval-bins.cjs"
   },
   "files": [
     "dist",
@@ -18,8 +23,7 @@
   ],
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "prepare": "rm -rf build && mkdir build && rollup -f umd -n interval-bins -o dist/interval-bins.js -- main.js",
-    "build": "webpack"
+    "prepare": "rm -rf dist && mkdir dist && rollup -c"
   },
   "keywords": [
     "javascript",
diff --git a/rollup.config.js b/rollup.config.js
new file mode 100644
index 0000000..ae827a4
--- /dev/null
+++ b/rollup.config.js
@@ -0,0 +1,26 @@
+import resolve from '@rollup/plugin-node-resolve';
+import commonjs from '@rollup/plugin-commonjs';
+import json from '@rollup/plugin-json';
+
+export default {
+  input: 'main.js',  // Entry point for the application
+  output: [
+  {
+    file: 'dist/interval-bins.mjs', // Output bundle location
+    format: 'esm'
+  },
+  {
+    file: 'dist/interval-bins.cjs', // Output bundle location
+    format: 'cjs' // CommonJS format suitable for Node.js require()
+  }
+  ],
+  plugins: [
+    resolve({
+      preferBuiltins: true // Prefer Node.js built-ins over npm modules if available
+    }),
+    commonjs(),
+    json()
+  ],
+  // List of Node built-in modules to leave as external dependencies
+  // external: []
+};
diff --git a/webpack.config.js b/webpack.config.js
deleted file mode 100644
index 1a7703c..0000000
--- a/webpack.config.js
+++ /dev/null
@@ -1,22 +0,0 @@
-//------------------------------------------------------------------------------
-/* global require */
-/* global module */
-/* global __dirname */
-//------------------------------------------------------------------------------
-
-const path = require('path');
-
-module.exports = {
- mode : 'production',
- output: {
-   path: path.resolve(__dirname, 'dist'),
-   filename: 'interval-bins.js',
-
-  globalObject: 'this',
-
-  library: {
-    name: 'interval-bins',
-    type: 'umd',
-  },
- },
-};