diff --git a/charts/prometheus-postgres-exporter/Chart.yaml b/charts/prometheus-postgres-exporter/Chart.yaml
index 280648009be1..c04e3bd8b6f7 100644
--- a/charts/prometheus-postgres-exporter/Chart.yaml
+++ b/charts/prometheus-postgres-exporter/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "v0.15.0"
 description: A Helm chart for prometheus postgres-exporter
 name: prometheus-postgres-exporter
-version: 5.2.0
+version: 5.3.0
 home: https://github.com/prometheus-community/postgres_exporter
 sources:
 - https://github.com/prometheus-community/postgres_exporter
diff --git a/charts/prometheus-postgres-exporter/templates/deployment.yaml b/charts/prometheus-postgres-exporter/templates/deployment.yaml
index 8635e9237ec1..f233b23a5930 100644
--- a/charts/prometheus-postgres-exporter/templates/deployment.yaml
+++ b/charts/prometheus-postgres-exporter/templates/deployment.yaml
@@ -180,6 +180,9 @@ spec:
       affinity:
 {{ toYaml . | indent 8 }}
     {{- end }}
+{{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName }}
+{{- end }}
     {{- with .Values.tolerations }}
       tolerations:
 {{ toYaml . | indent 8 }}
diff --git a/charts/prometheus-postgres-exporter/values.yaml b/charts/prometheus-postgres-exporter/values.yaml
index 678574154bca..c94c36cf0290 100644
--- a/charts/prometheus-postgres-exporter/values.yaml
+++ b/charts/prometheus-postgres-exporter/values.yaml
@@ -61,6 +61,8 @@ prometheusRule:
     #     description: replication for {{ template "prometheus-postgres-exporter.fullname" . }} PostgreSQL is lagging by {{ "{{ $value }}" }} hour(s).
     #     summary: PostgreSQL replication is lagging by {{ "{{ $value }}" }} hour(s).
 
+priorityClassName: ""
+
 resources: {}
   # We usually recommend not to specify default resources and to leave this as a conscious
   # choice for the user. This also increases chances charts run on environments with little