diff --git a/package.json b/package.json
index 33ba4ad1..4aa82bf8 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   ],
   "author": "MyCrypto",
   "license": "MIT",
+  "main": "dist/index.js",
   "module": "dist/index.js",
   "types": "dist/index.d.ts",
   "files": [
diff --git a/rollup.config.js b/rollup.config.js
index a28bdf4b..876c77f6 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -17,7 +17,7 @@ const external = [
 export default {
   input: 'src/index.ts',
 
-  output: { file: pkg.module, format: 'es', sourcemap: true },
+  output: { file: pkg.main, format: 'es', sourcemap: true },
 
   // exclude all node modules
   external,