diff --git a/.github/workflows/jest.yml b/.github/workflows/jest.yml
index f6a69760..caa4c6d1 100644
--- a/.github/workflows/jest.yml
+++ b/.github/workflows/jest.yml
@@ -40,9 +40,9 @@ jobs:
       - uses: actions/checkout@v6
         # https://github.com/actions/setup-node/
       - name: Set up pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@v5
         with:
-          version: 9
+          version: 10
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
diff --git a/.node-version b/.node-version
index d7fd7cd5..d9b04247 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-v25.8.2
+v25.9.0
diff --git a/SECURITY.md b/SECURITY.md
index 0ec51084..d87c717f 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -11,7 +11,7 @@
 | OS baseline           | WSL (Ubuntu 25.10)                 | Shared environment across tracks.                                                   |
 | Ruby / Rails content  | Ruby 4.0.2 (`.ruby-version`)       | Rails subprojects rely on Bundler; check each subfolder for gem specs.              |
 | Python content        | CPython 3.14.3 (`.python-version`) | Install per-track requirements as documented.                                       |
-| JavaScript/TypeScript | Node v25.8.1 (`.node-version`)     | Frontend tracks (React/Vue/TS/JS) use Node tooling plus per-project `package.json`. |
+| JavaScript/TypeScript | Node v25.9.0 (`.node-version`)     | Frontend tracks (React/Vue/TS/JS) use Node tooling plus per-project `package.json`. |
 
 ## Backward Compatibility
 
diff --git a/javascript/README.md b/javascript/README.md
index 190dc882..1038de18 100644
--- a/javascript/README.md
+++ b/javascript/README.md
@@ -1,6 +1,6 @@
 ## 1. Environment
 
-- Node v25.8.1
+- Node v25.9.0
 - PNPM 10.30.3
 
 ## 2. Reference
diff --git a/ruby-on-rails/perfect-ruby-on-rails/.node-version b/ruby-on-rails/perfect-ruby-on-rails/.node-version
index d7fd7cd5..d9b04247 100644
--- a/ruby-on-rails/perfect-ruby-on-rails/.node-version
+++ b/ruby-on-rails/perfect-ruby-on-rails/.node-version
@@ -1 +1 @@
-v25.8.2
+v25.9.0
diff --git a/ruby-on-rails/perfect-ruby-on-rails/README.md b/ruby-on-rails/perfect-ruby-on-rails/README.md
index 30aa6928..b47dbde1 100644
--- a/ruby-on-rails/perfect-ruby-on-rails/README.md
+++ b/ruby-on-rails/perfect-ruby-on-rails/README.md
@@ -1,6 +1,6 @@
 ## 1. Environment
 
-- Node v25.8.1
+- Node v25.9.0
 
 ## 2. Reference
 
diff --git a/typescript/README.md b/typescript/README.md
index 47194e14..e1fc6287 100644
--- a/typescript/README.md
+++ b/typescript/README.md
@@ -1,7 +1,7 @@
 ## 1. Environment
 
 - WSL (Ubuntu 25.10)
-- Node v25.8.1
+- Node v25.9.0
 - PNPM 10.30.3
 
 ## 2. Reference