diff --git a/README.md b/README.md
index b3f23a6..195bc2d 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ Options:
 <html>
   <head>
     <title>Monitoring</title>
-    <script src="https://unpkg.com/moonbeam-tools@0.0.48/dist/index.umd.js" charset="UTF-8" integrity="sha384-cZWwBlX0VaNDJ0oOYvE2KSkFHkJIYSgPqjJX3gCuOvwyTvzNs07mjn3q2RzkBurB" crossorigin="anonymous"></script>
+    <script src="https://unpkg.com/moonbeam-tools@0.0.49/dist/index.umd.js" charset="UTF-8" integrity="sha384-cZWwBlX0VaNDJ0oOYvE2KSkFHkJIYSgPqjJX3gCuOvwyTvzNs07mjn3q2RzkBurB" crossorigin="anonymous"></script>
     <style>
       body {
         padding: 2rem;
diff --git a/package.json b/package.json
index a7ed341..5d18aa2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "moonbeam-tools",
-  "version": "0.0.48",
+  "version": "0.0.49",
   "description": "Set of tools for Moonbeam blockchain",
   "exports": {
     ".": {
diff --git a/rollup.config.js b/rollup.config.js
index 0a32d3d..b666f9e 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -35,4 +35,29 @@ export default [
       optimizer(),
     ],
   },
+
+  // CommonJS (for Node) and ES module (for bundlers) build.
+  // (We could have three entries in the configuration array
+  // instead of two, but it's quicker to generate multiple
+  // builds from a single configuration where possible, using
+  // an array for the `output` option, where we can specify
+  // `file` and `format` for each target)
+  {
+    input: "src/index.ts",
+    output: [
+      { file: pkg.main, format: "cjs" },
+      { file: pkg.module, format: "es" },
+    ],
+    plugins: [
+      commonjs({
+        include: ["node_modules/debug/src/index.js"],
+      }),
+      optimizer(),
+    ],
+  },
+  {
+    input: "./build/src/index.d.ts",
+    output: [{ file: "dist/index.d.ts", format: "es" }],
+    plugins: [dts()],
+  },
 ];
