diff --git a/docs/Changelog.md b/docs/Changelog.md
index b44b9ee..3721779 100644
--- a/docs/Changelog.md
+++ b/docs/Changelog.md
@@ -1,4 +1,10 @@
 
+# v6.0.4.0 Stable (2023-08-17)
+
+- libmpv-2.dll support
+- MediaInfo v23.07
+- libmpv shinchiro 2023-08-16
+
 # v6.0.3.2 Beta (2022-10-14)
 
 - Support multiple folders input (regression fix).
diff --git a/src/Misc/ExtensionMethods.cs b/src/Misc/ExtensionMethods.cs
index fdf333c..51f6fc9 100644
--- a/src/Misc/ExtensionMethods.cs
+++ b/src/Misc/ExtensionMethods.cs
@@ -120,14 +120,13 @@ public static class PathStringExtension
         return instance;
     }
 
-    // Ensure trailing directory separator char
     public static string AddSep(this string instance)
     {
         if (string.IsNullOrEmpty(instance))
             return "";
 
         if (!instance.EndsWith(Path.DirectorySeparatorChar.ToString()))
-            instance = instance + Path.DirectorySeparatorChar;
+            instance += Path.DirectorySeparatorChar;
 
         return instance;
     }
diff --git a/src/Package/Package.appxmanifest b/src/Package/Package.appxmanifest
index 625b9a1..2c1b3c0 100644
--- a/src/Package/Package.appxmanifest
+++ b/src/Package/Package.appxmanifest
@@ -11,7 +11,7 @@
 	<Identity
 	  Name="5664FrankSkare.mpv.net"
 	  Publisher="CN=6A1A1E69-736C-4C77-B310-7B6D38E32617"
-	  Version="6.0.3.0" />
+	  Version="6.0.4.0" />
 
 	<Properties>
 		<DisplayName>mpv.net</DisplayName>
diff --git a/src/Properties/AssemblyInfo.cs b/src/Properties/AssemblyInfo.cs
index fb0b344..379a7c1 100644
--- a/src/Properties/AssemblyInfo.cs
+++ b/src/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@ using System.Runtime.InteropServices;
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("6.0.3.2")]
-[assembly: AssemblyFileVersion("6.0.3.2")]
+[assembly: AssemblyVersion("6.0.4.0")]
+[assembly: AssemblyFileVersion("6.0.4.0")]
diff --git a/src/mpv.net.csproj b/src/mpv.net.csproj
index 647af62..7c169b7 100644
--- a/src/mpv.net.csproj
+++ b/src/mpv.net.csproj
@@ -13,6 +13,7 @@
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <TargetFrameworkProfile />
+    <IsWebBootstrapper>false</IsWebBootstrapper>
     <PublishUrl>publish\</PublishUrl>
     <Install>true</Install>
     <InstallFrom>Disk</InstallFrom>
@@ -25,7 +26,6 @@
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
     <ApplicationVersion>1.0.0.%2a</ApplicationVersion>
-    <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
   </PropertyGroup>