diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index d63c884..b20e991 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -161,7 +161,7 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
         with:
           upload_url: ${{ steps.get_release.outputs.upload_url }}
-          asset_name: ${{ matrix.obname }}
+          asset_name: ${{ matrix.obname }}.zip
           asset_path: ${{ matrix.obname }}.zip
           asset_content_type: application/zip