diff --git a/.nvmrc b/.nvmrc
index ca5c350055..df6ae3370f 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-24.18.0
+24.21.0
diff --git a/README.mdx b/README.mdx
index 0e2da154de..9e786d6291 100644
--- a/README.mdx
+++ b/README.mdx
@@ -81,7 +81,7 @@ repo root.
 
 ## Requirements
 
-- **Node.js `24.18.0`** (pinned in `.nvmrc` and `engines` in `package.json`).
+- **Node.js `24.21.0`** (pinned in `.nvmrc` and `engines` in `package.json`).
 - **npm** as the package manager.
 
 It is highly recommended that you use a tool like
diff --git a/package-lock.json b/package-lock.json
index 43cbb11197..f58538b5a0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -70,7 +70,7 @@
         "typescript-eslint": "8.70.1"
       },
       "engines": {
-        "node": "24.18.0"
+        "node": "24.21.0"
       }
     },
     "node_modules/@11ty/gray-matter": {
diff --git a/package.json b/package.json
index 790e837863..7376846e0f 100644
--- a/package.json
+++ b/package.json
@@ -115,7 +115,7 @@
     "typescript-eslint": "8.70.1"
   },
   "engines": {
-    "node": "24.18.0"
+    "node": "24.21.0"
   },
   "overrides": {
     "@vercel/node": {