diff --git a/.github/workflows/build-wheels-cuda-windows.yml b/.github/workflows/build-wheels-cuda-windows.yml
index 0eb621fe22f..728740f649a 100644
--- a/.github/workflows/build-wheels-cuda-windows.yml
+++ b/.github/workflows/build-wheels-cuda-windows.yml
@@ -94,7 +94,9 @@ jobs:
       repository: ${{ matrix.repository }}
       ref: ""
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      # Avoid the unsatisfiable conda upgrade in the Windows runner's base env.
+      # https://github.com/pytorch/test-infra/pull/9179
+      test-infra-ref: e3d344d886a7281f6a919115d332df2a080da8ad
       build-matrix: ${{ needs.filter-matrix.outputs.matrix }}
       pre-script: ${{ matrix.pre-script }}
       env-script: ${{ matrix.env-script }}