diff --git a/backend/internal/sys/config/conf_database.go b/backend/internal/sys/config/conf_database.go
index af674a7e..22c2b244 100644
--- a/backend/internal/sys/config/conf_database.go
+++ b/backend/internal/sys/config/conf_database.go
@@ -17,7 +17,7 @@ type Database struct {
 	Host             string `yaml:"host"`
 	Port             string `yaml:"port"`
 	Database         string `yaml:"database"`
-	SslMode          string `yaml:"ssl_mode"           conf:"default:prefer"`
+	SslMode          string `yaml:"ssl_mode"           conf:"default:require"`
 	SslRootCert      string `yaml:"ssl_rootcert"`
 	SslCert          string `yaml:"ssl_cert"`
 	SslKey           string `yaml:"ssl_key"`