diff --git a/.github/workflows/flow.yml b/.github/workflows/flow.yml
index 903b7ef..0069280 100644
--- a/.github/workflows/flow.yml
+++ b/.github/workflows/flow.yml
@@ -39,11 +39,12 @@ jobs:
     - name: Compress PDK
       if: ${{ env.GO_AHEAD == '1' }}
       run: |
+        sudo apt-get install -y pv
         tar -cf /tmp/sky130A.tar -C /usr/local/pdk/sky130A .
-        xz -zk /tmp/sky130A.tar
+        pv /tmp/sky130A.tar | xz > /tmp/sky130A.tar.xz
     - name: Upload artifact
       if: ${{ env.GO_AHEAD == '1' }}
-      run:
-          go get -u github.com/tcnksm/ghr
-          export PATH=$PATH:$(go env GOPATH)/bin
-          ghr -u ${{ env.OWNER }} -r ${{ env.REPO }} -t ${{ github.token }} ${{ env.TAG_NAME }} /tmp/sky130A.tar.xz
\ No newline at end of file
+      run: |
+        go get -u github.com/tcnksm/ghr
+        export PATH=$PATH:$(go env GOPATH)/bin
+        ghr -u ${{ env.OWNER }} -r ${{ env.REPO }} -t ${{ github.token }} ${{ env.TAG_NAME }} /tmp/sky130A.tar.xz
\ No newline at end of file