diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 853157949..59e07c202 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/volume=80gb/spot=false"
     environment:
       name: github-pages
-      url: ${{ steps.deployment.outputs.page-url }}
+      url: ${{ steps.deployment.outputs['page-url'] }}
     steps:
       - name: Checkout
         uses: actions/checkout@v7