diff --git a/main.go b/main.go
index 7fe5410..81e5b6c 100644
--- a/main.go
+++ b/main.go
@@ -164,7 +164,7 @@ func main() {
 	flag.Parse()
   loadIndexHTML()
 
-	if err := os.MkdirAll(config.StorageDir, 0755); err != nil {
+	if err := os.MkdirAll(config.StorageDir, 0700); err != nil {
 		log.Fatalf("Failed to create storage directory: %v", err)
 	}