diff --git a/Shadowsocks.WPF/Shadowsocks.WPF.csproj b/Shadowsocks.WPF/Shadowsocks.WPF.csproj
index 79893b6f..7160aaac 100644
--- a/Shadowsocks.WPF/Shadowsocks.WPF.csproj
+++ b/Shadowsocks.WPF/Shadowsocks.WPF.csproj
@@ -49,7 +49,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MaterialDesignThemes" Version="3.2.0" />
+    <PackageReference Include="MaterialDesignThemes" Version="4.0.0" />
     <PackageReference Include="MdXaml" Version="1.9.0" />
     <PackageReference Include="OxyPlot.Wpf" Version="2.0.0" />
     <PackageReference Include="ReactiveUI.Events.WPF" Version="13.1.1" />