diff --git a/package.json b/package.json
index 118d2bb..70c891a 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "esdoc-ecmascript-proposal-plugin": "^1.0.0",
     "esdoc-importpath-plugin": "^1.0.1",
     "esdoc-standard-plugin": "^1.0.0",
-    "eslint": "^4.15.0",
+    "eslint": "^6.0.0",
     "eslint-config-happiness": "^10.2.1",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-node": "^5.1.1",