diff --git a/package.json b/package.json
index 38c989d9c9fbe0432826561aca29865a675c2595..6666d65cd5778e1691b24fcab046f1505b907709 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "gulp-typescript": "3.1.6",
     "gulp-uglify": "2.1.2",
     "gulp-util": "3.0.8",
-    "mocha": "3.3.0",
+    "mocha": "3.4.1",
     "riot-tag-loader": "1.0.0",
     "string-replace-webpack-plugin": "0.1.3",
     "stylus": "0.54.5",