diff --git a/package.json b/package.json
index 54b3535..221b767 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "devDependencies": {
     "chai": "^3.5.0",
     "coveralls": "^2.13.1",
-    "mocha": "^3.4.1",
+    "mocha": "^9.0.3",
     "nyc": "^10.3.2",
     "qrcode": "^0.8.1"
   },