diff --git a/CHANGELOG.md b/CHANGELOG.md
index e669d3e4..211d72dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,8 @@
 
 ## master / unreleased
 
-* [CHANGE] Alertmanager: Replace `http-metrics` port with `grpc` port #494 
-* [CHANGE] Alertmanager: Expose 9094 TCP and UDP for gossip cluster - #494
+* [CHANGE] Alertmanager: Add `grpc` port #494 
+* [CHANGE] Alertmanager: Expose 9094 TCP and UDP for gossip cluster #494
   * If the AlertManager headless service existed prior to applying the change, it will have only one port set, which is a known issue. See [kubernetes/kubernetes#39188](https://github.com/kubernetes/kubernetes/issues/39188). Re-creating the headless service can resolve this issue 
 
 ## 2.2.0 / 2024-01-16
diff --git a/templates/alertmanager/alertmanager-svc-headless.yaml b/templates/alertmanager/alertmanager-svc-headless.yaml
index 8d8e5727..53db5857 100644
--- a/templates/alertmanager/alertmanager-svc-headless.yaml
+++ b/templates/alertmanager/alertmanager-svc-headless.yaml
@@ -16,6 +16,10 @@ spec:
   clusterIP: None
   publishNotReadyAddresses: true
   ports:
+    - port: {{ .Values.config.server.http_listen_port }}
+      protocol: TCP
+      name: http-metrics
+      targetPort: http-metrics
     - port: {{ .Values.config.server.grpc_listen_port }}
       protocol: TCP
       name: grpc