diff --git a/chapter2/package.json b/chapter2/package.json
index e7b923e..cea4d32 100644
--- a/chapter2/package.json
+++ b/chapter2/package.json
@@ -20,7 +20,7 @@
     "babel-register": "^6.22.0",
     "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.26.1",
-    "eslint": "^3.14.0",
+    "eslint": "^4.19.1",
     "eslint-config-standard": "^6.0.0",
     "eslint-plugin-babel": "^4.0.0",
     "eslint-plugin-mocha": "^4.8.0",