diff --git a/v2rayN/v2rayN/App.xaml b/v2rayN/v2rayN/App.xaml
index e9c027a0..de82e83f 100644
--- a/v2rayN/v2rayN/App.xaml
+++ b/v2rayN/v2rayN/App.xaml
@@ -13,7 +13,7 @@
                     BaseTheme="Light"
                     PrimaryColor="Blue"
                     SecondaryColor="Lime" />
-                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesign2.Defaults.xaml" />
             </ResourceDictionary.MergedDictionaries>
             <system:Double x:Key="MenuItemHeight">26</system:Double>
             <system:Double x:Key="StdFontSize">12</system:Double>
@@ -72,10 +72,10 @@
                 <Setter Property="FontSize" Value="{DynamicResource StdFontSize}" />
                 <Style.Triggers>
                     <Trigger Property="IsSelected" Value="true">
-                        <Setter Property="Background" Value="{DynamicResource PrimaryHueLightBrush}" />
+                        <Setter Property="Background" Value="{DynamicResource MaterialDesign.Brush.Primary.Light}" />
                     </Trigger>
                     <Trigger Property="IsMouseOver" Value="true">
-                        <Setter Property="Background" Value="{DynamicResource PrimaryHueMidBrush}" />
+                        <Setter Property="Background" Value="{DynamicResource MaterialDesign.Brush.Primary}" />
                     </Trigger>
                 </Style.Triggers>
             </Style>
diff --git a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
index f4ae6d85..89b8f441 100644
--- a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
@@ -1847,7 +1847,7 @@ namespace v2rayN.ViewModels
         {
             var theme = _paletteHelper.GetTheme();
 
-            theme.SetBaseTheme(isDarkTheme ? Theme.Dark : Theme.Light);
+            theme.SetBaseTheme(isDarkTheme ? BaseTheme.Dark : BaseTheme.Light);
             _paletteHelper.SetTheme(theme);
 
             Utils.SetDarkBorder(Application.Current.MainWindow, isDarkTheme);
diff --git a/v2rayN/v2rayN/Views/MainWindow.xaml b/v2rayN/v2rayN/Views/MainWindow.xaml
index 490c6cb5..4405741e 100644
--- a/v2rayN/v2rayN/Views/MainWindow.xaml
+++ b/v2rayN/v2rayN/Views/MainWindow.xaml
@@ -669,9 +669,9 @@
                             <Style BasedOn="{StaticResource MaterialDesignDataGridCell}" TargetType="DataGridCell">
                                 <Style.Triggers>
                                     <DataTrigger Binding="{Binding isActive}" Value="True">
-                                        <Setter Property="Background" Value="{DynamicResource PrimaryHueLightBrush}" />
+                                        <Setter Property="Background" Value="{DynamicResource MaterialDesign.Brush.Primary.Light}" />
                                         <Setter Property="Foreground" Value="Black" />
-                                        <Setter Property="BorderBrush" Value="{DynamicResource PrimaryHueLightBrush}" />
+                                        <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.Primary.Light}" />
                                     </DataTrigger>
                                 </Style.Triggers>
                             </Style>
diff --git a/v2rayN/v2rayN/Views/MsgView.xaml b/v2rayN/v2rayN/Views/MsgView.xaml
index 440b77ab..7ec25302 100644
--- a/v2rayN/v2rayN/Views/MsgView.xaml
+++ b/v2rayN/v2rayN/Views/MsgView.xaml
@@ -17,7 +17,7 @@
             <TextBlock
                 Margin="8,0"
                 VerticalAlignment="Center"
-                Foreground="{DynamicResource PrimaryHueLightBrush}"
+                Foreground="{DynamicResource MaterialDesign.Brush.Primary.Light}"
                 Style="{StaticResource ToolbarTextBlock}"
                 Text="{x:Static resx:ResUI.MsgInformationTitle}" />
             <ComboBox
diff --git a/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml b/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml
index 1b397607..e463d15d 100644
--- a/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml
+++ b/v2rayN/v2rayN/Views/RoutingSettingWindow.xaml
@@ -201,9 +201,9 @@
                             <Style BasedOn="{StaticResource MaterialDesignDataGridCell}" TargetType="DataGridCell">
                                 <Style.Triggers>
                                     <DataTrigger Binding="{Binding isActive}" Value="True">
-                                        <Setter Property="Background" Value="{DynamicResource PrimaryHueLightBrush}" />
+                                        <Setter Property="Background" Value="{DynamicResource MaterialDesign.Brush.Primary.Light}" />
                                         <Setter Property="Foreground" Value="Black" />
-                                        <Setter Property="BorderBrush" Value="{DynamicResource PrimaryHueLightBrush}" />
+                                        <Setter Property="BorderBrush" Value="{DynamicResource MaterialDesign.Brush.Primary.Light}" />
                                     </DataTrigger>
                                 </Style.Triggers>
                             </Style>
diff --git a/v2rayN/v2rayN/v2rayN.csproj b/v2rayN/v2rayN/v2rayN.csproj
index 371585c1..88ddc373 100644
--- a/v2rayN/v2rayN/v2rayN.csproj
+++ b/v2rayN/v2rayN/v2rayN.csproj
@@ -16,7 +16,7 @@
 	
 	<ItemGroup>
 		<PackageReference Include="Downloader" Version="3.0.6" />		
-		<PackageReference Include="MaterialDesignThemes" Version="4.9.0" />
+		<PackageReference Include="MaterialDesignThemes" Version="5.0.0" />
 		<PackageReference Include="H.NotifyIcon.Wpf" Version="2.0.131" />
 		<PackageReference Include="QRCoder.Xaml" Version="1.5.1" />
 		<PackageReference Include="sqlite-net-pcl" Version="1.9.172" />