diff --git a/.github/workflows/web-preview.yml b/.github/workflows/web-preview.yml
index f9cc3b063fcd..ac3f58b4c55b 100644
--- a/.github/workflows/web-preview.yml
+++ b/.github/workflows/web-preview.yml
@@ -37,7 +37,10 @@ jobs:
       github.event.pull_request.head.repo.full_name == github.repository &&
       contains(github.event.pull_request.labels.*.name, 'preview:web') &&
       (github.event.action != 'labeled' || github.event.label.name == 'preview:web')
-    runs-on: blacksmith-8vcpu-ubuntu-2404
+    # Upstream runs this on Blacksmith; every fork workflow uses GitHub-hosted
+    # runners, so a Blacksmith job here would queue forever if anyone ever
+    # applied the preview:web label.
+    runs-on: ubuntu-24.04
     timeout-minutes: 10
     env:
       VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}