diff --git a/telemetry/glean/metrics.yaml b/telemetry/glean/metrics.yaml
index 3d788c5..68a098b 100644
--- a/telemetry/glean/metrics.yaml
+++ b/telemetry/glean/metrics.yaml
@@ -260,6 +260,7 @@ ad:
     expires: never
     labels:
       - sample_feature
+      - contextual_placement
 
 ad_client:
   context_id: