diff --git a/services/monitoring/tempo_config.yaml.j2 b/services/monitoring/tempo_config.yaml.j2
index 5d3ae6ddc..a887aba20 100644
--- a/services/monitoring/tempo_config.yaml.j2
+++ b/services/monitoring/tempo_config.yaml.j2
@@ -21,6 +21,12 @@ compactor:
 # and via https://github.com/ITISFoundation/osparc-ops-environments/issues/1086
 metrics_generator:
   processor:
+    span_metrics:
+      dimensions:
+        - service
+        - span_kind
+        - status_code
+        # Intentionally exclude span_name to prevent high cardinality
     local_blocks:
       filter_server_spans: false
       flush_to_storage: true