diff --git a/package.json b/package.json
index 88fec9c..bd55404 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "eslint-plugin-react": "6.6.0",
     "estraverse-fb": "^1.3.1",
     "jsdom": "^9.12.0",
-    "mocha": "^3.3.0",
+    "mocha": "^4.1.0",
     "react-dom": "^15.5.0",
     "react-addons-test-utils": "^15.5.0",
     "rimraf": "^2.6.1",