diff --git a/helm-toolkit/templates/manifests/_ceph-storageclass.tpl b/helm-toolkit/templates/manifests/_ceph-storageclass.tpl
index 2381bed0b..f4b1039b0 100644
--- a/helm-toolkit/templates/manifests/_ceph-storageclass.tpl
+++ b/helm-toolkit/templates/manifests/_ceph-storageclass.tpl
@@ -107,6 +107,7 @@ parameters:
 {{- range $attr, $value := $storageclassData.parameters }}
   {{ $attr }}: {{ $value | quote }}
 {{- end }}
+allowVolumeExpansion: true
 
 {{- end }}
 {{- end }}