diff --git a/data/hostname/dbreplica0.euwest.azure.internal.softwareheritage.org.yaml b/data/hostname/dbreplica0.euwest.azure.internal.softwareheritage.org.yaml
index 33c552b4..0496b02c 100644
--- a/data/hostname/dbreplica0.euwest.azure.internal.softwareheritage.org.yaml
+++ b/data/hostname/dbreplica0.euwest.azure.internal.softwareheritage.org.yaml
@@ -1,3 +1,6 @@
 ---
 backups::exclude:
   - srv/softwareheritage/postgres
+
+# for ZFS
+swh::apt_config::enable_non_free: true