diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 164d905..b2a9f6a 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -33,5 +33,5 @@ jobs:
         run: |
           echo "${{ secrets.COSIGN_KEY }}" > cosign.key
           DIGEST=$(skopeo inspect --creds "gitea:${{ secrets.OCI_PASSWD }}" --format '{{.Digest}}' docker://${{ vars.OCI_REGISTRY }}/drath/dev-toolbx:${{ matrix.variant }})
-          cosign sign --yes --new-bundle-format=false --key cosign.key "${{ vars.OCI_REGISTRY }}/drath/dev-toolbx@${DIGEST}"
+          cosign sign --yes --key cosign.key "${{ vars.OCI_REGISTRY }}/drath/dev-toolbx@${DIGEST}"