diff --git a/.github/workflows/preview-env-deploy.yml b/.github/workflows/preview-env-deploy.yml
index c1cb0cd30c..28e2b0f4f9 100644
--- a/.github/workflows/preview-env-deploy.yml
+++ b/.github/workflows/preview-env-deploy.yml
@@ -32,7 +32,7 @@ jobs:
         env:
           NODE_OPTIONS: --max_old_space_size=8192
           DOCS_SITE_URL: https://${{ steps.secrets.outputs.PREVIEW_ENV_BUCKET_NAME }}
-          DOCS_SITE_BASE_URL: /pr-${{ github.event.number }}
+          DOCS_SITE_BASE_URL: /pr-${{ github.event.number }}/
 
       - name: Authenticate with Google Cloud
         uses: google-github-actions/auth@v2