diff --git a/README.md b/README.md
index ddc3ed5..94d4f36 100644
--- a/README.md
+++ b/README.md
@@ -440,7 +440,7 @@ jobs:
       name: 'Authenticate to Google Cloud'
       uses: 'google-github-actions/auth@v0'
       with:
-        token_format: 'access_token' # <--
+        token_format: 'id_token' # <--
         workload_identity_provider: 'projects/123456789/locations/global/workloadIdentityPools/my-pool/providers/my-provider'
         service_account: 'my-service-account@my-project.iam.gserviceaccount.com'
         id_token_audience: 'https://myapp-uvehjacqzq.a.run.app' # required, value depends on target