diff --git a/charts/uptime-kuma/Chart.yaml b/charts/uptime-kuma/Chart.yaml
index 56721a9..4b5c3bf 100644
--- a/charts/uptime-kuma/Chart.yaml
+++ b/charts/uptime-kuma/Chart.yaml
@@ -11,4 +11,4 @@ name: uptime-kuma
 sources:
   - https://github.com/louislam/uptime-kuma
 type: application
-version: 2.19.4
+version: 2.20.0
diff --git a/charts/uptime-kuma/README.md b/charts/uptime-kuma/README.md
index 9456794..018cc74 100644
--- a/charts/uptime-kuma/README.md
+++ b/charts/uptime-kuma/README.md
@@ -53,6 +53,7 @@ A self-hosted Monitoring tool like "Uptime-Robot".
 | podEnv[0].value | string | `"3001"` |  |
 | podLabels | object | `{}` |  |
 | podSecurityContext | object | `{}` |  |
+| priorityClassName | string | `""` | Use this option to set custom PriorityClass to the created deployment |
 | readinessProbe.enabled | bool | `true` |  |
 | readinessProbe.exec.command | list | `[]` |  |
 | readinessProbe.failureThreshold | int | `3` |  |
diff --git a/charts/uptime-kuma/templates/deployment.yaml b/charts/uptime-kuma/templates/deployment.yaml
index 3157101..aa990c9 100644
--- a/charts/uptime-kuma/templates/deployment.yaml
+++ b/charts/uptime-kuma/templates/deployment.yaml
@@ -44,6 +44,9 @@ spec:
       dnsConfig:
         {{- toYaml .Values.dnsConfig | nindent 8 }}
       {{- end }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName | quote }}
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
diff --git a/charts/uptime-kuma/templates/statefulset.yaml b/charts/uptime-kuma/templates/statefulset.yaml
index efb6d7d..5bf1a5b 100644
--- a/charts/uptime-kuma/templates/statefulset.yaml
+++ b/charts/uptime-kuma/templates/statefulset.yaml
@@ -42,6 +42,9 @@ spec:
       dnsConfig:
         {{- toYaml .Values.dnsConfig | nindent 8 }}
       {{- end }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName | quote }}
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
diff --git a/charts/uptime-kuma/values.yaml b/charts/uptime-kuma/values.yaml
index 0c5c830..1aa1acd 100644
--- a/charts/uptime-kuma/values.yaml
+++ b/charts/uptime-kuma/values.yaml
@@ -203,3 +203,7 @@ dnsPolicy: ""
 
 # -- Use this option to set custom DNS configurations to the created deployment
 dnsConfig: {}
+
+# -- Use this option to set custom PriorityClass to the created deployment
+# ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/#priorityclass
+priorityClassName: ""