diff --git a/kubernetes/loculus/values.yaml b/kubernetes/loculus/values.yaml
index 0a74e2eecd..c2e313e7b0 100644
--- a/kubernetes/loculus/values.yaml
+++ b/kubernetes/loculus/values.yaml
@@ -2113,7 +2113,7 @@ defaultOrganisms:
       <<: *ingest
       configFile:
         taxon_id: 3052518
-        calculate_groups_override_json: true
+        grouping_override_url: "https://pathoplexus.github.io/curation_data/grouping_override/cchf/curated_group_02-03-2026.json"
         segment_identification:
           method: "align"
           nextclade_dataset_name: community/pathoplexus/cchfv