diff --git a/.github/workflows/claude-code-dependency-review.yml b/.github/workflows/claude-code-dependency-review.yml
index 45ed9ed..7b9119e 100644
--- a/.github/workflows/claude-code-dependency-review.yml
+++ b/.github/workflows/claude-code-dependency-review.yml
@@ -41,7 +41,7 @@ jobs:
         run: echo "::warning::yarn install failed — dependency review will run without node_modules. This may happen if the project uses private registries requiring authentication."
 
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@v2
+        uses: google-github-actions/auth@v3
         with:
           workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ secrets.GCP_SERVICE_ACCOUNT }}
diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 6967186..ae95e6e 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -31,7 +31,7 @@ jobs:
           fetch-depth: 1
 
       - name: Authenticate to Google Cloud
-        uses: google-github-actions/auth@v2
+        uses: google-github-actions/auth@v3
         with:
           workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ secrets.GCP_SERVICE_ACCOUNT }}