diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 8d29965..534db86 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -12,5 +12,5 @@ jobs:
         name: 'Authenticate to Google Cloud'
         uses: 'google-github-actions/auth@v1'
         with:
-          workload_identity_provider: ${{ env.GCP_WORKLOAD_IDENTITY_PROVIDER }}
-          service_account: ${{ env.GCP_SERVICE_ACCOUNT }}
+          workload_identity_provider: ${{ vars.GCP_WORKLOAD_IDENTITY_PROVIDER }}
+          service_account: ${{ vars.GCP_SERVICE_ACCOUNT }}