diff --git a/.github/workflows/reusable-test-core-build-process.yml b/.github/workflows/reusable-test-core-build-process.yml
index 0712a78724c4a..e53cea283ebbf 100644
--- a/.github/workflows/reusable-test-core-build-process.yml
+++ b/.github/workflows/reusable-test-core-build-process.yml
@@ -11,6 +11,11 @@ on:
         required: false
         type: 'string'
         default: 'ubuntu-24.04'
+      node-version:
+        description: 'The Node.js version to use (22, 20, etc.). Leave blank to use the version specified in .nvmrc.'
+        required: false
+        type: 'string'
+        default: ''
       directory:
         description: 'Directory to run WordPress from. Valid values are `src` or `build`'
         required: false
@@ -56,7 +61,7 @@ jobs:
   # - Saves the pull request number to a text file.
   # - Uploads the pull request number as an artifact.
   build-process-tests:
-    name: Core running from ${{ inputs.directory }} / ${{ contains( inputs.os, 'macos-' ) && 'MacOS' || contains( inputs.os, 'windows-' ) && 'Windows' || 'Linux' }}
+    name: Core running from ${{ inputs.directory }} / ${{ inputs.node-version != '' && format( 'Node.js {0}', inputs.node-version ) || '' }} ${{ contains( inputs.os, 'macos-' ) && 'MacOS' || contains( inputs.os, 'windows-' ) && 'Windows' || 'Linux' }}
     permissions:
       contents: read
     runs-on: ${{ inputs.os }}
@@ -72,7 +77,8 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
         with:
-          node-version-file: '.nvmrc'
+          node-version: ${{ inputs.node-version }}
+          node-version-file: ${{ inputs.node-version == '' && '.nvmrc' || '' }}
           cache: npm
 
       - name: Log debug information
@@ -109,7 +115,7 @@ jobs:
 
       - name: Upload ZIP as a GitHub Actions artifact
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
-        if: ${{ inputs.save-build || inputs.prepare-playground }}
+        if: ${{ ( inputs.save-build || inputs.prepare-playground ) && inputs.node-version == '' }}
         with:
           name: wordpress-build-${{ github.event_name == 'pull_request' && github.event.number || github.sha }}
           path: wordpress.zip
diff --git a/.github/workflows/reusable-test-gutenberg-build-process.yml b/.github/workflows/reusable-test-gutenberg-build-process.yml
index 1dfedf6ea9e63..54528bdf18aca 100644
--- a/.github/workflows/reusable-test-gutenberg-build-process.yml
+++ b/.github/workflows/reusable-test-gutenberg-build-process.yml
@@ -11,6 +11,11 @@ on:
         required: false
         type: 'string'
         default: 'ubuntu-24.04'
+      node-version:
+        description: 'The Node.js version to use (22, 20, etc.). Leave blank to use the version specified in .nvmrc.'
+        required: false
+        type: 'string'
+        default: ''
       directory:
         description: 'Directory to run WordPress from. Valid values are `src` or `build`'
         required: false
@@ -41,7 +46,7 @@ jobs:
   # - Builds Gutenberg.
   # - Ensures version-controlled files are not modified or deleted.
   build-process-tests:
-    name: Gutenberg running from ${{ inputs.directory }} / ${{ contains( inputs.os, 'macos-' ) && 'MacOS' || contains( inputs.os, 'windows-' ) && 'Windows' || 'Linux' }}
+    name: Gutenberg running from ${{ inputs.directory }} / ${{ inputs.node-version != '' && format( 'Node.js {0}', inputs.node-version ) || '' }} ${{ contains( inputs.os, 'macos-' ) && 'MacOS' || contains( inputs.os, 'windows-' ) && 'Windows' || 'Linux' }}
     permissions:
       contents: read
     runs-on: ${{ inputs.os }}
@@ -65,7 +70,8 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
         with:
-          node-version-file: '.nvmrc'
+          node-version: ${{ inputs.node-version }}
+          node-version-file: ${{ inputs.node-version == '' && '.nvmrc' || '' }}
           cache: npm
           cache-dependency-path: |
             package-lock.json
diff --git a/.github/workflows/test-build-processes.yml b/.github/workflows/test-build-processes.yml
index 559dd0a92a1c4..d1a6fac9ab8ff 100644
--- a/.github/workflows/test-build-processes.yml
+++ b/.github/workflows/test-build-processes.yml
@@ -135,13 +135,53 @@ jobs:
       os: ${{ matrix.os }}
       directory: ${{ matrix.directory }}
 
+  # Tests the WordPress Core build process on additional Node.js versions.
+  #
+  # Testing against additional Node.js versions can help spot potential issues before upgrading.
+  test-core-build-process-additional-node-versions:
+    name: Core running from ${{ matrix.directory }}
+    uses: ./.github/workflows/reusable-test-core-build-process.yml
+    permissions:
+      contents: read
+    if: ${{ github.repository == 'WordPress/wordpress-develop' }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ 'ubuntu-24.04', 'macos-14', 'windows-2022' ]
+        node-version: [ '22', '24' ]
+        directory: [ 'src', 'build' ]
+    with:
+      os: ${{ matrix.os }}
+      node-version: ${{ matrix.node-version }}
+      directory: ${{ matrix.directory }}
+
+  # Tests the Gutenberg build process on additional Node.js versions.
+  #
+  # Testing against additional Node.js versions can help spot potential issues before upgrading.
+  test-gutenberg-build-process-additional-node-versions:
+    name: Gutenberg running from ${{ matrix.directory }}
+    uses: ./.github/workflows/reusable-test-gutenberg-build-process.yml
+    permissions:
+      contents: read
+    if: ${{ github.repository == 'WordPress/wordpress-develop' }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ 'ubuntu-24.04', 'macos-14', 'windows-2022' ]
+        node-version: [ '22', '24' ]
+        directory: [ 'src', 'build' ]
+    with:
+      os: ${{ matrix.os }}
+      node-version: ${{ matrix.node-version }}
+      directory: ${{ matrix.directory }}
+
   slack-notifications:
     name: Slack Notifications
     uses: ./.github/workflows/slack-notifications.yml
     permissions:
       actions: read
       contents: read
-    needs: [ test-core-build-process, test-core-build-process-additional-os, test-gutenberg-build-process, test-gutenberg-build-process-additional-os ]
+    needs: [ test-core-build-process, test-core-build-process-additional-os, test-gutenberg-build-process, test-gutenberg-build-process-additional-os, test-core-build-process-additional-node-versions, test-gutenberg-build-process-additional-node-versions ]
     if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
     with:
       calling_status: ${{ contains( needs.*.result, 'cancelled' ) && 'cancelled' || contains( needs.*.result, 'failure' ) && 'failure' || 'success' }}