diff --git a/package.json b/package.json
index 1cea8f3..2631a67 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "@types/mocha": "^2.2.41",
     "chai": "^3.5.0",
     "cross-env": "^4.0.0",
-    "mocha": "^3.3.0",
+    "mocha": "^3.4.0",
     "nyc": "^10.3.0",
     "source-map-support": "^0.4.15",
     "ts-node": "^3.0.2",