diff --git a/package.json b/package.json
index 521ad89fe..c63422c0e 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "karma-sourcemap-loader": "^0.3.6",
     "karma-webpack": "^1.7.0",
     "mkdirp": "^0.5.1",
-    "mocha": "^3.1.0",
+    "mocha": "^9.0.3",
     "phantomjs-prebuilt": "^2.1.2",
     "rimraf": "^2.4.2",
     "typescript": "^2.1.4",