diff --git a/NCMDumpCLI/NCMDumpCLI.csproj b/NCMDumpCLI/NCMDumpCLI.csproj
index 4d34744..7706245 100644
--- a/NCMDumpCLI/NCMDumpCLI.csproj
+++ b/NCMDumpCLI/NCMDumpCLI.csproj
@@ -9,7 +9,7 @@
     <ApplicationIcon>NCMDumpCLI.ico</ApplicationIcon>
     <PlatformTarget>x64</PlatformTarget>
     <ApplicationManifest>app.manifest</ApplicationManifest>
-	<Version>1.1.2</Version>
+	<Version>1.3.0</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/NCMDumpCLI/Program.cs b/NCMDumpCLI/Program.cs
index 5917fb4..b8b044a 100644
--- a/NCMDumpCLI/Program.cs
+++ b/NCMDumpCLI/Program.cs
@@ -7,8 +7,6 @@ public static void Main(string[] args)
     {
         NCMDump Core = new();
 
-
-
         if (args.Length == 0)
         {
             Console.WriteLine("Drag [*.ncm] file on exe to start");
@@ -42,7 +40,7 @@ public static void Main(string[] args)
         Console.Write("Press Any Key to Exit...");
         Console.ReadLine();
 
-        void WalkThrough(DirectoryInfo dir)
+        async void WalkThrough(DirectoryInfo dir)
         {
             Console.WriteLine("DIR: " + dir.FullName);
             foreach (DirectoryInfo d in dir.GetDirectories())
@@ -52,7 +50,7 @@ void WalkThrough(DirectoryInfo dir)
             foreach (FileInfo f in dir.EnumerateFiles())
             {
                 Console.WriteLine("Converting : " + f.FullName);
-                if (Core.Convert(f.FullName)) Console.WriteLine("...OK");
+                if (await Core.ConvertAsync(f.FullName)) Console.WriteLine("...OK");
                 else Console.WriteLine("...Fail");
                 Console.WriteLine();
             }
diff --git a/NCMDumpCore/NCMDump.cs b/NCMDumpCore/NCMDump.cs
index ebf6561..435aee6 100644
--- a/NCMDumpCore/NCMDump.cs
+++ b/NCMDumpCore/NCMDump.cs
@@ -202,12 +202,12 @@ private uint ReadUint32(MemoryStream ms)
             return BitConverter.ToUInt32(buffer);
         }
 
-        public async Task<bool> ConvertAsync(string path)
+        public bool Convert(string path)
         {
-            return Convert(path);
+            return Task.Run(()=>ConvertAsync(path)).Result;
         }
 
-        public bool Convert(string path)
+        public async Task<bool> ConvertAsync(string path)
         {
             if (!System.IO.File.Exists(path))
             {
@@ -216,7 +216,7 @@ public bool Convert(string path)
             }
 
             //Read all bytes to ram.
-            var ms = new MemoryStream(System.IO.File.ReadAllBytes(path));
+            var ms = new MemoryStream(await System.IO.File.ReadAllBytesAsync(path));
 
             //Verify Header
             if (!ReadHeader(ref ms))
diff --git a/NCMDumpCore/NCMDumpCore.csproj b/NCMDumpCore/NCMDumpCore.csproj
index e346f0d..f86eed2 100644
--- a/NCMDumpCore/NCMDumpCore.csproj
+++ b/NCMDumpCore/NCMDumpCore.csproj
@@ -1,9 +1,12 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0-windows10.0.19041.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+	  <VersionPrefix>1.3.0</VersionPrefix>
+    <AssemblyVersion></AssemblyVersion>
+    <FileVersion></FileVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/NCMDumpGUI/MainWindow.xaml.cs b/NCMDumpGUI/MainWindow.xaml.cs
index bf79ea5..f8ab4a8 100644
--- a/NCMDumpGUI/MainWindow.xaml.cs
+++ b/NCMDumpGUI/MainWindow.xaml.cs
@@ -4,6 +4,7 @@
 using System.Collections.ObjectModel;
 using System.IO;
 using System.Linq;
+using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Forms;
@@ -82,7 +83,7 @@ private async void StartButton_Click(object sender, RoutedEventArgs e)
             {
                 if (NCMCollection[i].FileStatus == "Success") continue;
 
-                if (await core.ConvertAsync(NCMCollection[i].FilePath))
+                if (await Task.Run(()=>core.ConvertAsync(NCMCollection[i].FilePath)))
                 {
                     NCMCollection[i].FileStatus = "Success";
                     this.UpdateLayout();
diff --git a/NCMDumpGUI/NCMDumpGUI.csproj b/NCMDumpGUI/NCMDumpGUI.csproj
index 4e3ba72..b407c5e 100644
--- a/NCMDumpGUI/NCMDumpGUI.csproj
+++ b/NCMDumpGUI/NCMDumpGUI.csproj
@@ -7,7 +7,7 @@
     <UseWPF>true</UseWPF>
     <ApplicationIcon>NCMDumpCLI.ico</ApplicationIcon>
     <UseWindowsForms>True</UseWindowsForms>
-	<Version>1.1.2</Version>
+	<Version>1.3.0</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/README.md b/README.md
index 95e77c9..9d021d2 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,14 @@
 # NCMDump.NET
+
 Decipher .ncm file to mp3 || flac
 
-# Changelog
+## Changelog
+
+### v1.3
+
+Bug fix.
+
+Async optimization.
 
 ### v1.2
 
@@ -15,21 +22,21 @@ Drag directory on executable support.
 
 Bug fix
 
-
-# Usage
+## Usage
 
 ### CLI
 
 Drag .ncm file or directory on .exe
 
 ### GUI
+
 ~~omission~~
 
+## System Requirement
 
-# System Requirement
+### OS : Windows 10 10.0.19041.0 with .NET6 Runtime
 
-### OS : Windows 10 10.0.19041.0 with .NET6
 
+## Refrence
 
-# Refrence
-https://github.com/anonymous5l/ncmdump
+<https://github.com/anonymous5l/ncmdump>