diff --git a/node_modules/write/package.json b/node_modules/write/package.json
index 45ec9db7d5..badf21663f 100644
--- a/node_modules/write/package.json
+++ b/node_modules/write/package.json
@@ -30,7 +30,7 @@
     "async-each": "^1.0.1",
     "delete": "^1.1.0",
     "gulp-format-md": "^1.0.0",
-    "mocha": "^3.4.2"
+    "mocha": "^4.0.0"
   },
   "keywords": [
     "file",