diff --git a/testdata/upload-download/.forgejo/workflows/test.yml b/testdata/upload-download/.forgejo/workflows/test.yml
index 78b1075..1dd19ea 100644
--- a/testdata/upload-download/.forgejo/workflows/test.yml
+++ b/testdata/upload-download/.forgejo/workflows/test.yml
@@ -10,6 +10,7 @@ jobs:
         with:
           user: testuser
           password: admin1234
+          lxc-ip-prefix: 10.0.15
       - id: testrepo
         run: |
           forgejo-test-helper.sh push testrepo http://testuser:admin1234@${{ steps.forgejo.outputs.host-port }} testuser testrepo > /tmp/output