diff --git a/cmd/root.go b/cmd/root.go
index 66af01f..f8a5389 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -18,7 +18,7 @@ import (
 
 const (
 	AllowedCharacters string = `^[A-z0-9.\-_]+$`
-	ReleaseVersion    string = "5.0.4"
+	ReleaseVersion    string = "5.1.0"
 )
 
 var (
@@ -133,7 +133,7 @@ func init() {
 	rootCmd.Flags().StringVar(&CodeTheme, "code-theme", "solarized-dark256", "theme for source code syntax highlighting")
 	rootCmd.Flags().StringVar(&Compression, "compression", "zstd", "compression format to use for index (none, zlib, zstd)")
 	rootCmd.Flags().BoolVar(&CompressionFast, "compression-fast", false, "use fastest compression level (default is best)")
-	rootCmd.Flags().IntVar(&Concurrency, "concurrency", math.MaxInt32, "maximum concurrency for scan threads")
+	rootCmd.Flags().IntVar(&Concurrency, "concurrency", 10240, "maximum concurrency for scan threads")
 	rootCmd.Flags().BoolVarP(&Debug, "debug", "d", false, "display even more verbose logs")
 	rootCmd.Flags().BoolVar(&DisableButtons, "disable-buttons", false, "disable first/prev/next/last buttons")
 	rootCmd.Flags().BoolVar(&ExitOnError, "exit-on-error", false, "shut down webserver on error, instead of just printing error")