diff --git a/charts/pulsar/templates/zookeeper-service.yaml b/charts/pulsar/templates/zookeeper-service.yaml
index 7ee9890..a71849b 100644
--- a/charts/pulsar/templates/zookeeper-service.yaml
+++ b/charts/pulsar/templates/zookeeper-service.yaml
@@ -31,6 +31,9 @@ metadata:
 {{ toYaml .Values.zookeeper.service.annotations | indent 4 }}
 spec:
   ports:
+    # prometheus needs to access /metrics endpoint
+    - name: http
+      port: {{ .Values.zookeeper.ports.http }}
     - name: follower
       port: {{ .Values.zookeeper.ports.follower }}
     - name: leader-election