diff --git a/stable/prometheus/Chart.yaml b/stable/prometheus/Chart.yaml
index ab90a9fb17..5dbddbe2e8 100755
--- a/stable/prometheus/Chart.yaml
+++ b/stable/prometheus/Chart.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 name: prometheus
-version: 9.3.2
+version: 9.3.3
 appVersion: 2.13.1
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/
diff --git a/stable/prometheus/templates/_helpers.tpl b/stable/prometheus/templates/_helpers.tpl
index 8ea012479e..295aa01c50 100644
--- a/stable/prometheus/templates/_helpers.tpl
+++ b/stable/prometheus/templates/_helpers.tpl
@@ -6,6 +6,13 @@ Expand the name of the chart.
 {{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "prometheus.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
 {{/*
 Create unified labels for prometheus components
 */}}
@@ -15,7 +22,7 @@ release: {{ .Release.Name }}
 {{- end -}}
 
 {{- define "prometheus.common.metaLabels" -}}
-chart: {{ .Chart.Name }}-{{ .Chart.Version }}
+chart: {{ template "prometheus.chart" . }}
 heritage: {{ .Release.Service }}
 {{- end -}}