diff --git a/js/package.json b/js/package.json
index ba4193bf2..3ff5a08ca 100644
--- a/js/package.json
+++ b/js/package.json
@@ -27,7 +27,7 @@
     "build:embed": "cross-env EMBED=1 node webpack/embed",
     "build:i18n": "npm run clean && npm run build && babel-node ./scripts/build-i18n.js",
     "ci:build": "cross-env NODE_ENV=production npm run build",
-    "clean": "rm -rf ./.build ./.coverage ./.happypack ./build ./node_modules/.cache",
+    "clean": "rimraf ./.build ./.coverage ./.happypack ./build ./node_modules/.cache",
     "coveralls": "npm run testCoverage && coveralls < coverage/lcov.info",
     "lint": "npm run lint:css && npm run lint:js",
     "lint:cached": "npm run lint:css && npm run lint:js:cached",
@@ -43,7 +43,7 @@
     "test": "cross-env NODE_ENV=test mocha --compilers ejs:ejsify 'src/**/*.spec.js'",
     "test:coverage": "cross-env NODE_ENV=test istanbul cover _mocha -- --compilers ejs:ejsify 'src/**/*.spec.js'",
     "test:e2e": "cross-env NODE_ENV=test mocha 'src/**/*.e2e.js'",
-    "test:npm": "(cd .npmjs && npm i) && node test/npmParity && node test/npmJsonRpc && (rm -rf .npmjs/node_modules)",
+    "test:npm": "(cd .npmjs && npm i) && node test/npmParity && node test/npmJsonRpc && (rimraf .npmjs/node_modules)",
     "prepush": "npm run lint:cached"
   },
   "devDependencies": {
@@ -115,6 +115,7 @@
     "react-addons-test-utils": "15.4.2",
     "react-hot-loader": "3.0.0-beta.6",
     "react-intl-aggregate-webpack-plugin": "0.0.1",
+    "rimraf": "2.6.2",
     "sinon": "1.17.7",
     "sinon-as-promised": "4.0.2",
     "sinon-chai": "2.8.0",