diff --git a/package.json b/package.json
index cd5288689..f730f3083 100644
--- a/package.json
+++ b/package.json
@@ -197,7 +197,7 @@
     "karma-firefox-launcher": "^1.0.1",
     "karma-qunit": "^1.2.1",
     "lodash.assign": "^4.0.6",
-    "mocha": "^4.0.0",
+    "mocha": "^5.0.0",
     "mocha-eslint": "^4.0.0",
     "mocha-jsdom": "^1.1.0",
     "mocha-sinon": "^2.0.0",