diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 80e7088e..41a558a6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -134,14 +134,16 @@ jobs:
           echo "Generated AWS configuration..."
           cat  ${GITHUB_WORKSPACE}/.aws/configuration
           /scripts/run_fake_remote_file_servers.sh .  # launch the servers in the background
-      # For integration tests on GCS we use a real Google account
-      # Retrieve the Google credentials through "Workload Identity Federation"
-      # see https://github.com/google-github-actions/auth?tab=readme-ov-file#workload-identity-federation-through-a-service-account
-      - uses: google-github-actions/auth@v2
+      - name: Authenticate to GCP using "Workload Identity Federation"
+        # For integration tests on GCS we use a real Google account
+        # Retrieve the Google credentials through "Workload Identity Federation"
+        # see https://github.com/google-github-actions/auth?tab=readme-ov-file#workload-identity-federation-through-a-service-account
+        uses: google-github-actions/auth@v2
         with:
           service_account: khiops-gcs-driver-test-sa@ino-olr-dak-ideal-sbx.iam.gserviceaccount.com
           workload_identity_provider: projects/322269704080/locations/global/workloadIdentityPools/github/providers/my-repo
-          token_format: access_token
+          create_credentials_file: true  # true by default but let's make if explicit
+          activate_credentials_file: true
       - name: Run Unit & Integration Tests
         env:
           KHIOPS_SAMPLES_DIR: ${{ github.workspace }}/khiops-samples