diff --git a/.github/workflows/prpush.yml b/.github/workflows/prpush.yml
index dcaa728..019096a 100644
--- a/.github/workflows/prpush.yml
+++ b/.github/workflows/prpush.yml
@@ -67,7 +67,7 @@ jobs:
 
     - name: Upload testdata
       if: failure()
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v6
       with:
         name: testdata
         path: ./lzss/testdata/fuzz