diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 5baaa05..2d13fdf 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -119,11 +119,14 @@ jobs:
         with:
           global-json-file: self/global.json
 
+      # An exact version, not line/global.json: resolving "latest 10.0" goes through an aka.ms link
+      # that redirects to a host answering 409, while an exact version downloads from builds.dotnet
+      # (#461). Only release/10.x reaches this step; move the pin with that line's global.json.
       - name: Setup .NET (${{ matrix.branch }})
         if: matrix.branch != ''
         uses: actions/setup-dotnet@26b0ec14cb23fa6904739307f278c14f94c95bf1 # v5.4.0
         with:
-          global-json-file: line/global.json
+          dotnet-version: 10.0.402
 
       - name: Build the site
         run: self/site/build.sh "${{ matrix.branch != '' && 'line' || 'self' }}" "out/${{ matrix.folder }}" "${{ matrix.label }}"