diff --git a/package.json b/package.json
index fea1ddf..f8afa8b 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "html-webpack-plugin": "^2.28.0",
     "http-proxy-middleware": "^0.17.3",
     "node-sass": "^4.5.2",
-    "opn": "^4.0.2",
+    "opn": "^6.0.0",
     "optimize-css-assets-webpack-plugin": "^1.3.0",
     "ora": "^1.1.0",
     "rimraf": "^2.6.0",