diff --git a/apis/management.cattle.io/v3/backup_types.go b/apis/management.cattle.io/v3/backup_types.go
index 175d7649..38f35529 100644
--- a/apis/management.cattle.io/v3/backup_types.go
+++ b/apis/management.cattle.io/v3/backup_types.go
@@ -35,6 +35,8 @@ type S3BackupConfig struct {
 	Region string `yaml:"region" json:"region,omitempty"`
 	// Endpoint is used if this is not an AWS API
 	Endpoint string `yaml:"endpoint" json:"endpoint"`
+	// EndpointCA is used to connect to custom s3 endpoints
+	EndpointCA string `yaml:"endpoint_ca" json:"endpointCa,omitempty"`
 }
 type EtcdBackup struct {
 	types.Namespaced