diff --git a/helm/oncall/templates/ingress-regular.yaml b/helm/oncall/templates/ingress-regular.yaml
index caa9e151..d29756aa 100644
--- a/helm/oncall/templates/ingress-regular.yaml
+++ b/helm/oncall/templates/ingress-regular.yaml
@@ -23,7 +23,10 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
-  {{- if .Values.ingress.tls }} 
+  {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
   tls:
       {{- tpl (toYaml .Values.ingress.tls) . | nindent 4 }}
   {{- end }}