diff --git a/Shadowsocks.WPF/Shadowsocks.WPF.csproj b/Shadowsocks.WPF/Shadowsocks.WPF.csproj
index 1f3326c86..771bd0095 100644
--- a/Shadowsocks.WPF/Shadowsocks.WPF.csproj
+++ b/Shadowsocks.WPF/Shadowsocks.WPF.csproj
@@ -49,7 +49,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="MaterialDesignThemes" Version="4.9.0" />
+    <PackageReference Include="MaterialDesignThemes" Version="5.1.0" />
     <PackageReference Include="MdXaml" Version="1.21.0" />
     <PackageReference Include="OxyPlot.Wpf" Version="2.2.0" />
     <PackageReference Include="ReactiveUI.Events.WPF" Version="15.1.1" />