diff --git a/package.json b/package.json
index 6fc0adde8..60708892e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eosjs",
-  "version": "20.0.1",
+  "version": "20.0.2",
   "description": "Talk to eos API",
   "main": "dist/index.js",
   "scripts": {
@@ -12,7 +12,7 @@
     "test": "jest src/tests/*eosjs*",
     "test-node": "jest src/tests/*node*",
     "test-all": "yarn test && yarn test-node && yarn cypress",
-    "build": "tsc -p ./tsconfig.json && cp src/ripemd.es5.js dist/ripemd.js",
+    "build": "tsc -p ./tsconfig.json && node scripts/copy-ripe-md.js",
     "build-web": "webpack --config webpack.prod.js && webpack --config webpack.debug.js",
     "build-production": "yarn build && yarn build-web && yarn test-all",
     "clean": "rm -rf dist",
diff --git a/scripts/copy-ripe-md.js b/scripts/copy-ripe-md.js
new file mode 100644
index 000000000..c047379c7
--- /dev/null
+++ b/scripts/copy-ripe-md.js
@@ -0,0 +1,8 @@
+var fs = require('fs');
+var path = require('path');
+var root = __dirname.replace('scripts', '');
+
+if(!fs.existsSync(path.join(root + 'dist')))
+    fs.mkdirSync(path.join(root + 'dist'));
+
+fs.copyFileSync(path.join(root + 'src/ripemd.es5.js'), path.join(root + 'dist/ripemd.js'));
\ No newline at end of file