diff --git a/.github/workflows/windows-cmake.yml b/.github/workflows/windows-cmake.yml
index 6f71b28623..28c8b33b38 100644
--- a/.github/workflows/windows-cmake.yml
+++ b/.github/workflows/windows-cmake.yml
@@ -115,7 +115,6 @@ jobs:
 
         # TODO(b/513099808): Re-enable after fixing intermittent GCS I/O errors causing flaky builds.
         export SCCACHE_IGNORE_SERVER_IO_ERROR=1
-        unset SCCACHE_GCS_BUCKET SCCACHE_GCS_KEY_PREFIX SCCACHE_GCS_RW_MODE
 
         export MSVC_VERSION="${{ matrix.msvc }}"
         export BRANCH_IDENTIFIER=$(echo "${{ github.ref_name }}" | tr '[:punct:]' '_')