diff --git a/package.json b/package.json
index 7d01e6f..177864f 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "grunt-contrib-watch": "^1.0.0",
     "grunt-mocha-phantomjs": "^4.0.0",
     "grunt-noflo-browser": "^1.5.1",
-    "mocha": "^5.0.0"
+    "mocha": "^6.0.0"
   },
   "scripts": {
     "test": "grunt test"