diff --git a/package.json b/package.json
index ef169413..49b78ab2 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "globby": "^6.1.0",
     "inspector-proxy": "^1.0.0",
     "intelli-espower-loader": "^1.0.1",
-    "mocha": "^3.5.3",
+    "mocha": "^4.0.0",
     "mz-modules": "^2.0.0",
     "nyc": "^11.2.1",
     "power-assert": "^1.4.4",