diff --git a/tests/data/metadata/discovery/int-wmo-test-cap.yml b/tests/data/metadata/discovery/int-wmo-test-cap.yml
index 1729e69a..34f82d8e 100644
--- a/tests/data/metadata/discovery/int-wmo-test-cap.yml
+++ b/tests/data/metadata/discovery/int-wmo-test-cap.yml
@@ -35,7 +35,7 @@ identification:
             keywords_type: theme
             vocabulary:
                 name: Earth system disciplines as defined by the WMO Unified Data Policy, Resolution 1 (Cg-Ext(2021), Annex 1.
-                url: https://github.com/wmo-im/wis2-topic-hierarchy/blob/main/topic-hierarchy/earth-system-discipline/index.csv
+                url: https://codes.wmo.int/wis/topic-hierarchy/earth-system-discipline
     extents:
         spatial:
             - bbox: [-180.0, -90.0, 180.0, 90.0]