diff --git a/charts/prometheus/Chart.yaml b/charts/prometheus/Chart.yaml
index d65d78c7f6ae..53571bbfab10 100644
--- a/charts/prometheus/Chart.yaml
+++ b/charts/prometheus/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v2
 name: prometheus
 appVersion: v2.47.0
-version: 24.4.0
+version: 24.5.0
 kubeVersion: ">=1.19.0-0"
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/
diff --git a/charts/prometheus/templates/ingress.yaml b/charts/prometheus/templates/ingress.yaml
index fc2468d8bc5b..84341a9c2cf0 100644
--- a/charts/prometheus/templates/ingress.yaml
+++ b/charts/prometheus/templates/ingress.yaml
@@ -4,7 +4,7 @@
 {{- $ingressSupportsPathType := eq (include "ingress.supportsPathType" .) "true" -}}
 {{- $releaseName := .Release.Name -}}
 {{- $serviceName := include "prometheus.server.fullname" . }}
-{{- $servicePort := .Values.server.service.servicePort -}}
+{{- $servicePort := .Values.server.ingress.servicePort | default .Values.server.service.servicePort -}}
 {{- $ingressPath := .Values.server.ingress.path -}}
 {{- $ingressPathType := .Values.server.ingress.pathType -}}
 {{- $extraPaths := .Values.server.ingress.extraPaths -}}
diff --git a/charts/prometheus/templates/service.yaml b/charts/prometheus/templates/service.yaml
index 1aa384eb0a97..069f3270d813 100644
--- a/charts/prometheus/templates/service.yaml
+++ b/charts/prometheus/templates/service.yaml
@@ -47,6 +47,9 @@ spec:
       nodePort: {{ .Values.server.service.gRPC.nodePort }}
     {{- end }}
     {{- end }}
+{{- if .Values.server.service.additionalPorts }}
+{{ toYaml .Values.server.service.additionalPorts | indent 4 }}
+{{- end }}
   selector:
   {{- if and .Values.server.statefulSet.enabled .Values.server.service.statefulsetReplica.enabled }}
     statefulset.kubernetes.io/pod-name: {{ template "prometheus.server.fullname" . }}-{{ .Values.server.service.statefulsetReplica.replica }}
diff --git a/charts/prometheus/values.yaml b/charts/prometheus/values.yaml
index 45d3bcd32b9c..b47ec9921c36 100644
--- a/charts/prometheus/values.yaml
+++ b/charts/prometheus/values.yaml
@@ -117,6 +117,19 @@ server:
   #   sidecarContainers:
   #      webserver:
   #        image: nginx
+  # OR for adding OAuth authentication to Prometheus
+  #   sidecarContainers:
+  #     oauth-proxy:
+  #       image: quay.io/oauth2-proxy/oauth2-proxy:v7.1.2
+  #       args:
+  #       - --upstream=http://127.0.0.1:9090
+  #       - --http-address=0.0.0.0:8081
+  #       - ...
+  #       ports:
+  #       - containerPort: 8081
+  #         name: oauth-proxy
+  #         protocol: TCP
+  #       resources: {}
   sidecarContainers: {}
 
   # sidecarTemplateValues - context to be used in template for sidecarContainers
@@ -309,6 +322,9 @@ server:
     ##
     extraLabels: {}
 
+    ## Redirect ingress to an additional defined port on the service
+    # servicePort: 8081
+
     ## Prometheus server Ingress hostnames with optional path
     ## Must be provided if Ingress is enabled
     ##
@@ -647,6 +663,13 @@ server:
       enabled: false
       replica: 0
 
+    ## Additional port to define in the Service
+    additionalPorts: []
+    # additionalPorts:
+    # - name: authenticated
+    #   port: 8081
+    #   targetPort: 8081
+
   ## Prometheus server pod termination grace period
   ##
   terminationGracePeriodSeconds: 300