diff --git a/package.json b/package.json
index 3d95473..76ff691 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
         "@types/node": "10.9.2",
         "chai": "^4.2.0",
         "clean-webpack-plugin": "^0.1.19",
-        "copy-webpack-plugin": "^6.0.0",
+        "copy-webpack-plugin": "^9.0.1",
         "mocha": "^6.1.4",
         "ts-loader": "^4.5.0",
         "ts-node": "^8.1.0",