diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f547520d5..cdb4e72b1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -11,7 +11,7 @@ jobs:
       matrix:
         node: [14, 16, 18]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
@@ -26,10 +26,24 @@ jobs:
       - run: npm test
         env:
           MOCHA_THROW_DEPRECATION: false
+  test-script:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - run: node --version
+      - run: npm install --engine-strict
+        working-directory: .github/scripts
+      - run: npm test
+        working-directory: .github/scripts
+        env:
+          MOCHA_THROW_DEPRECATION: false
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 18
@@ -40,7 +54,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: 18
diff --git a/.kokoro/samples-test.sh b/.kokoro/samples-test.sh
index d195fbf7c..4cd43e748 100755
--- a/.kokoro/samples-test.sh
+++ b/.kokoro/samples-test.sh
@@ -16,7 +16,9 @@
 
 set -eo pipefail
 
-export NPM_CONFIG_PREFIX=${HOME}/.npm-global
+# Ensure the npm global directory is writable, otherwise rebuild `npm`
+mkdir -p $NPM_CONFIG_PREFIX
+npm config -g ls || npm i -g npm@`npm --version`
 
 # Ensure the npm global directory is writable, otherwise rebuild `npm`
 mkdir -p $NPM_CONFIG_PREFIX