diff --git a/.forgejo/workflows/build-images.yaml b/.forgejo/workflows/build-images.yaml
index 0345d82..d3ed5eb 100644
--- a/.forgejo/workflows/build-images.yaml
+++ b/.forgejo/workflows/build-images.yaml
@@ -38,5 +38,5 @@ jobs:
           name: nixin-install-iso
           path: nixin-image-install-iso/iso/*.iso
           if-no-files-found: error
-          compression-level: 0
+          compression-level: 7
           overwrite: false