diff --git a/package.json b/package.json
index 4a1d936b..578b45ae 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "jquery": "3.2.1",
     "jquery-textcomplete": "1.8.0",
     "jquery-ui": "1.12.1",
-    "mocha": "3.3.0",
+    "mocha": "3.4.2",
     "mousetrap": "1.6.1",
     "npm-run-all": "4.0.2",
     "nyc": "10.3.2",