diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 8d31c61e..8a22ce2e 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,11 +1,18 @@
 version: 2
 updates:
-  - package-ecosystem: 'npm'
-    directory: '/'
+  - package-ecosystem: "npm"
+    directory: "/"
     schedule:
-      interval: 'monthly'
-
-  - package-ecosystem: 'github-actions'
-    directory: '/'
+      interval: "monthly"
+    ignore:
+      - dependency-name: "@types/node"
+        versions:
+          - "21.x"
+          - "22.x"
+          - "23.x"
+          - "24.x"
+          - "25.x"
+  - package-ecosystem: "github-actions"
+    directory: "/"
     schedule:
-      interval: 'monthly'
+      interval: "monthly"
diff --git a/package-lock.json b/package-lock.json
index aeba75d5..73aa69e2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "@types/js-yaml": "^4.0.9",
         "@types/markup-js": "^1.5.0",
         "@types/mocha": "^10.0.10",
-        "@types/node": "^24.10.1",
+        "@types/node": "^20.19.27",
         "@types/sinon": "^21.0.0",
         "@vercel/ncc": "^0.38.4",
         "c8": "^10.1.3",
@@ -431,7 +431,6 @@
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/@octokit/core/-/core-5.1.0.tgz",
       "integrity": "sha512-BDa2VAMLSh3otEiaMJ/3Y36GU4qf6GI+VivQ/P41NC6GHcdxpKlqV0ikSZ5gdQsmS3ojXeRx5vasgNTinF0Q4g==",
-      "peer": true,
       "dependencies": {
         "@octokit/auth-token": "^4.0.0",
         "@octokit/graphql": "^7.0.0",
@@ -741,12 +740,12 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "24.10.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.1.tgz",
-      "integrity": "sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ==",
+      "version": "20.19.27",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.27.tgz",
+      "integrity": "sha512-N2clP5pJhB2YnZJ3PIHFk5RkygRX5WO/5f0WC08tp0wd+sv0rsJk3MqWn3CbNmT2J505a5336jaQj4ph1AdMug==",
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.16.0"
+        "undici-types": "~6.21.0"
       }
     },
     "node_modules/@types/retry": {
@@ -830,7 +829,6 @@
       "resolved": "https://registry.npmjs.org/axios/-/axios-1.13.2.tgz",
       "integrity": "sha512-VPk9ebNqPcy5lRGuSlKx752IlDatOjT9paPlm8A7yOuW2Fbvp4X3JznJtT4f0GzGLLiWE9W8onz51SqLYwzGaA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "follow-redirects": "^1.15.6",
         "form-data": "^4.0.4",
@@ -2223,9 +2221,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
-      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
       "license": "MIT"
     },
     "node_modules/universal-user-agent": {
diff --git a/package.json b/package.json
index 7c906798..5845df50 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "@types/js-yaml": "^4.0.9",
     "@types/markup-js": "^1.5.0",
     "@types/mocha": "^10.0.10",
-    "@types/node": "^24.10.1",
+    "@types/node": "^20.19.27",
     "@types/sinon": "^21.0.0",
     "@vercel/ncc": "^0.38.4",
     "c8": "^10.1.3",