diff --git a/apis/management.cattle.io/v3/rke_types.go b/apis/management.cattle.io/v3/rke_types.go
index 3370cda2..bbe448a1 100644
--- a/apis/management.cattle.io/v3/rke_types.go
+++ b/apis/management.cattle.io/v3/rke_types.go
@@ -224,6 +224,8 @@ type AuthnConfig struct {
 	Strategy string `yaml:"strategy" json:"strategy,omitempty"`
 	// Authentication options
 	Options map[string]string `yaml:"options" json:"options,omitempty"`
+	// List of additional hostnames and IPs to include in the api server PKI cert
+	SANs []string `yaml:"sans" json:"sans,omitempty"`
 }
 
 type AuthzConfig struct {