diff --git a/package.json b/package.json
index a7dc9eb..35ed9d6 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "big-integer": "1.6.51",
     "chess.js": "0.12.0",
     "clipboardy": "3.0.0",
-    "opn": "5.5.0"
+    "opn": "6.0.0"
   },
   "devDependencies": {
     "ava": "3.15.0",