diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..209e3ef
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+20
diff --git a/CLAUDE.md b/CLAUDE.md
index e081b14..121c132 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -561,7 +561,7 @@ npm run fix     # 自动修复问题
 
 ### 环境要求
 
-- Node.js: 18.17.1+ / 20.3.0+ / 21.0.0+
+- Node.js: 20.3.0+
 - npm: 9.0+
 
 ## 重要文件说明
diff --git a/package.json b/package.json
index 408940d..7186e56 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "typescript-eslint": "^8.18.2"
   },
   "engines": {
-    "node": "^18.17.1 || ^20.3.0 || >= 21.0.0"
+    "node": ">=20.3.0"
   },
   "lint-staged": {
     "*.{js,ts,tsx}": [