diff --git a/docs/features/controller-metrics.md b/docs/features/controller-metrics.md
index 72e2df3561..c54fd0fd07 100644
--- a/docs/features/controller-metrics.md
+++ b/docs/features/controller-metrics.md
@@ -50,7 +50,7 @@ The Argo Rollouts controller publishes the following prometheus metrics about Ar
 | `rollout_info`                      | Information about rollout. |
 | `rollout_info_replicas_available`   | The number of available replicas per rollout. |
 | `rollout_info_replicas_unavailable` | The number of unavailable replicas per rollout. |
-| `rollout_phase`                     | Information on the state of the rollout. |
+| `rollout_phase`                     | [**DEPRECATED - use rollout_info**] Information on the state of the rollout. |
 | `rollout_reconcile`                 | Rollout reconciliation performance. |
 | `rollout_reconcile_error`           | Error occurring during the rollout. |
 | `experiment_info`                   | Information about Experiment. |