diff --git a/package.json b/package.json
index 1ee5477..e491183 100644
--- a/package.json
+++ b/package.json
@@ -128,7 +128,7 @@
     "babel-plugin-transform-runtime": "^6.23.0",
     "babel-plugin-transform-unicode-property-regex": "^2.0.5",
     "babel-register": "^6.26.0",
-    "copy-webpack-plugin": "^4.0.1",
+    "copy-webpack-plugin": "^5.0.0",
     "cpy-cli": "^1.0.1",
     "esdoc": "^0.5.2",
     "eslint": "^3.16.1",