diff --git a/package.json b/package.json
index 7cf17fa..7bbef12 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "babel-preset-es2015": "^6.18.0",
     "babel-register": "^6.18.0",
     "chokidar": "^1.3.0",
-    "mocha": "^3.1.2",
+    "mocha": "^3.4.0",
     "postcss": "^5.0.5",
     "standard": "^8.4.0"
   }