diff --git a/cmd/qfs/main.go b/cmd/qfs/main.go
index c147c53..acce2ee 100644
--- a/cmd/qfs/main.go
+++ b/cmd/qfs/main.go
@@ -332,7 +332,9 @@ func setConfigDefaults(cfg *config.Config) {
 		cfg.Server.ReadTimeout = 30 * time.Second
 	}
 	if cfg.Server.WriteTimeout == 0 {
-		cfg.Server.WriteTimeout = 30 * time.Second
+		// Sync operations (pricelist download over slow VPN) can take several minutes.
+		// Loopback-only binding means there is no risk of holding connections from external clients.
+		cfg.Server.WriteTimeout = 10 * time.Minute
 	}
 	if cfg.Backup.Time == "" {
 		cfg.Backup.Time = "00:00"
@@ -394,7 +396,7 @@ func ensureDefaultConfigFile(configPath string) error {
   port: 8080
   mode: "release"
   read_timeout: 30s
-  write_timeout: 30s
+  write_timeout: 10m
 
 backup:
   time: "00:00"