diff --git a/README.md b/README.md
index 381fd56..aab1211 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ jobs:
       name: 'Authenticate to Google Cloud'
       uses: 'google-github-actions/auth@v0.3.0'
       with:
-        create_credentials_file: 'access_token'
+        create_credentials_file: 'true'
         workload_identity_provider: 'projects/123456789/locations/global/workloadIdentityPools/my-pool/providers/my-provider'
         service_account: 'my-service-account@my-project.iam.gserviceaccount.com'