diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 01289c6..7537900 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -134,7 +134,7 @@ jobs:
            cabal install --install-method=copy --installdir=dist
            BINDIST_NAME="threadscope-ghc-${{matrix.ghc-version}}-${{ matrix.os }}${{ matrix.container && '-' }}${{matrix.container && 'alpine'}}"
            echo "BINDIST_NAME=$BINDIST_NAME" >> "$GITHUB_ENV"
-           tar -czf "$BINDIST_NAME.tar.xz" -C dist threadscope
+           tar -cJf "$BINDIST_NAME.tar.xz" -C dist threadscope
            echo bindist is "$BINDIST_NAME.tar.xz"
 
       - name: Upload bindist to artifacts