diff --git a/package.json b/package.json
index 8848846..a51f0b5 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "homepage": "https://github.com/kojinkai/eslint-config-boxdeluxe#readme",
   "devDependencies": {
     "ava": "^0.24.0",
-    "eslint": "^4.16.0",
+    "eslint": "^5.14.0",
     "is-plain-obj": "^1.1.0",
     "nyc": "^11.4.1",
     "tap-nyan": "^1.1.0",