diff --git a/package.json b/package.json
index bb134f4..22d2959 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^1.7.0",
     "minimist": "^1.2.0",
-    "mocha": "^2.4.5",
+    "mocha": "^6.1.4",
     "null-loader": "^0.1.1",
     "open": "0.0.5",
     "phantomjs-prebuilt": "^2.1.6",