diff --git a/.node-version b/.node-version
index 3516580..2a393af 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-20.17.0
+20.18.0
diff --git a/package.json b/package.json
index 3393e65..a818d14 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "textlint-rule-preset-ja-technical-writing": "10.0.1"
   },
   "volta": {
-    "node": "20.17.0"
+    "node": "20.18.0"
   },
   "packageManager": "pnpm@9.11.0"
 }