diff --git a/package.json b/package.json
index 6866af4..355b698 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "jsdoc": "^3.4.3",
     "jsdom": "^11.1.0",
     "sinon": "^4.0.0",
-    "mocha": "^4.0.0",
+    "mocha": "^6.1.3",
     "webpack": "^3.0.0"
   }
 }