diff --git a/.github/workflows/linux-upstream-gh-xz.yml b/.github/workflows/linux-upstream-gh-xz.yml
index a3b0f63..7420288 100644
--- a/.github/workflows/linux-upstream-gh-xz.yml
+++ b/.github/workflows/linux-upstream-gh-xz.yml
@@ -73,6 +73,7 @@ jobs:
         cmake ${{ env.lzma-source }}/CMakeLists.txt -B . --install-prefix ${{ env.lzma-install }} -DBUILD_SHARED_LIBS=ON
         cmake --build .
         cmake --install .
+        rm -fr ${GITHUB_WORKSPACE}/build-xz
       # working-directory: ${GITHUB_WORKSPACE}/build-xz
       # working-directory: ${{ env.lzma-source }}