diff --git a/shadowsocks-csharp/FodyWeavers.xml b/shadowsocks-csharp/FodyWeavers.xml
index 17e88514..5af4424f 100644
--- a/shadowsocks-csharp/FodyWeavers.xml
+++ b/shadowsocks-csharp/FodyWeavers.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Weavers>
-  <Costura />
   <Caseless StringComparison="Ordinal" />
+  <Costura />
 </Weavers>
\ No newline at end of file
diff --git a/shadowsocks-csharp/shadowsocks-csharp.csproj b/shadowsocks-csharp/shadowsocks-csharp.csproj
index 69f7b546..e8e69884 100644
--- a/shadowsocks-csharp/shadowsocks-csharp.csproj
+++ b/shadowsocks-csharp/shadowsocks-csharp.csproj
@@ -333,6 +333,43 @@
   </Target>
   <Import Project="3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets" Condition="Exists('3rd\Microsoft.Bcl.Build.1.0.21\build\Microsoft.Bcl.Build.targets')" />
   <Import Project="3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets" Condition="Exists('3rd\Fody.1.29.4\build\portable-net+sl+win+wpa+wp\Fody.targets')" />
+  <UsingTask TaskName="CosturaCleanup" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll" TaskFactory="CodeTaskFactory">
+    <ParameterGroup>
+      <Config Output="false" Required="true" ParameterType="Microsoft.Build.Framework.ITaskItem" />
+      <Files Output="false" Required="true" ParameterType="Microsoft.Build.Framework.ITaskItem[]" />
+    </ParameterGroup>
+    <Task Evaluate="true">
+      <Reference xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Include="System.Xml" />
+      <Reference xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Include="System.Xml.Linq" />
+      <Using xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Namespace="System" />
+      <Using xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Namespace="System.IO" />
+      <Using xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Namespace="System.Xml.Linq" />
+      <Code xmlns="http://schemas.microsoft.com/developer/msbuild/2003" Type="Fragment" Language="cs">
+<![CDATA[
+var config = XElement.Load(Config.ItemSpec).Elements("Costura").FirstOrDefault();
+
+if (config == null) return true;
+
+var excludedAssemblies = new List<string>();
+var attribute = config.Attribute("ExcludeAssemblies");
+if (attribute != null)
+    foreach (var item in attribute.Value.Split('|').Select(x => x.Trim()).Where(x => x != string.Empty))
+        excludedAssemblies.Add(item);
+var element = config.Element("ExcludeAssemblies");
+if (element != null)
+    foreach (var item in element.Value.Split(new[] { "\r\n", "\n" }, StringSplitOptions.RemoveEmptyEntries).Select(x => x.Trim()).Where(x => x != string.Empty))
+        excludedAssemblies.Add(item);
+
+var filesToCleanup = Files.Select(f => f.ItemSpec).Where(f => !excludedAssemblies.Contains(Path.GetFileNameWithoutExtension(f), StringComparer.InvariantCultureIgnoreCase));
+
+foreach (var item in filesToCleanup)
+  File.Delete(item);
+]]>
+      </Code></Task>
+  </UsingTask>
+  <Target Name="CleanReferenceCopyLocalPaths" AfterTargets="AfterBuild;NonWinFodyTarget">
+    <CosturaCleanup Config="FodyWeavers.xml" Files="@(ReferenceCopyLocalPaths->'$(OutDir)%(DestinationSubDirectory)%(Filename)%(Extension)')" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">