diff --git a/timer/pkonline/package.json b/timer/pkonline/package.json
index 82dfb18..2e122f8 100644
--- a/timer/pkonline/package.json
+++ b/timer/pkonline/package.json
@@ -30,7 +30,7 @@
     "connect-history-api-fallback": "^1.3.0",
     "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.28.0",
-    "eslint": "^3.19.0",
+    "eslint": "^4.19.1",
     "eslint-friendly-formatter": "^2.0.7",
     "eslint-loader": "^1.7.1",
     "eslint-plugin-html": "^2.0.0",