diff --git a/package.json b/package.json
index a8ee52a1f..e1bcb86bd 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "staticDeploy": "./generateStaticSite.sh",
     "test:watch": "react-scripts test --env=jsdom",
     "test": "cross-env CI=1 react-scripts test --env=jsdom",
-    "copy:webworkers": "cp node_modules/cornerstone-wado-image-loader/dist/*.min.js* public",
+    "copy:webworkers": "cpx 'node_modules/cornerstone-wado-image-loader/dist/*.min.js*' public",
     "version": "node -p -e \"'export default \\'' + require('./package.json').version + '\\';'\" > src/version.js",
     "sha": "echo \"export default '\"$(git rev-parse HEAD)\"';\" > src/sha.js",
     "details": "npm run version && npm run sha",
@@ -46,6 +46,7 @@
     "@babel/preset-react": "^7.0.0",
     "@svgr/rollup": "^4.1.0",
     "babel-eslint": "^9.0.0",
+    "cpx": "^1.5.0",
     "cross-env": "^5.2.0",
     "eslint": "5.12.0",
     "eslint-plugin-import": "^2.14.0",