diff --git a/charts/mailcrab/README.md b/charts/mailcrab/README.md
index 3b709e3..8150272 100644
--- a/charts/mailcrab/README.md
+++ b/charts/mailcrab/README.md
@@ -23,6 +23,7 @@ A Helm chart for deploying MailCrab in Kubernetes.
 | nameOverride | string | `""` | Configure the name override for resources. |
 | podAnnotations | object | `{}` | Configure annotations to be required by the pods to run the application. |
 | podSecurityContext | object | `{}` | Configure the pod security context. |
+| priorityClassName | string | `""` |  |
 | replicaCount | int | `1` | Configure the number of replicas to run. |
 | resources | object | `{}` | Enable autoscaling for the deployment. |
 | securityContext | object | `{}` | Configure the security context for the container. |
diff --git a/charts/mailcrab/templates/deployment.yaml b/charts/mailcrab/templates/deployment.yaml
index 0588cec..2a7a4d1 100644
--- a/charts/mailcrab/templates/deployment.yaml
+++ b/charts/mailcrab/templates/deployment.yaml
@@ -24,6 +24,7 @@ spec:
       imagePullSecrets:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      priorityClassName: {{ .Values.priorityClassName }}
       serviceAccountName: {{ include "mailcrab.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
diff --git a/charts/mailcrab/values.yaml b/charts/mailcrab/values.yaml
index e5d8d8b..35c4336 100644
--- a/charts/mailcrab/values.yaml
+++ b/charts/mailcrab/values.yaml
@@ -65,6 +65,10 @@ securityContext: {}
   # runAsNonRoot: true
   # runAsUser: 1000
 
+# Name of an existing PriorityClass to assign, defining the importance of the pods compared to other pods in the cluster.
+# Ref: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/
+priorityClassName: ""
+
 service:
   # -- The type of service to create.
   type: ClusterIP