diff --git a/examples/csharp/HelloworldLegacyCsproj/Greeter/Greeter.csproj b/examples/csharp/HelloworldLegacyCsproj/Greeter/Greeter.csproj
index d2597f13b5f..ab584c86d3e 100644
--- a/examples/csharp/HelloworldLegacyCsproj/Greeter/Greeter.csproj
+++ b/examples/csharp/HelloworldLegacyCsproj/Greeter/Greeter.csproj
@@ -36,15 +36,15 @@
       <HintPath>..\packages\Google.Protobuf.3.5.0\lib\net45\Google.Protobuf.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <HintPath>..\packages\Grpc.Core.1.8.0\lib\net45\Grpc.Core.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
       <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Grpc.Core">
+      <HintPath>..\packages\Grpc.Core.1.13.1\lib\net45\Grpc.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -62,11 +62,5 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup />
-  <Import Project="..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets'))" />
-  </Target>
+  <Import Project="..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/HelloworldLegacyCsproj/Greeter/packages.config b/examples/csharp/HelloworldLegacyCsproj/Greeter/packages.config
index 38297f8d617..8e61429a8ea 100644
--- a/examples/csharp/HelloworldLegacyCsproj/Greeter/packages.config
+++ b/examples/csharp/HelloworldLegacyCsproj/Greeter/packages.config
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.5.0" targetFramework="net45" />
-  <package id="Grpc" version="1.8.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.8.0" targetFramework="net45" />
-  <package id="Grpc.Tools" version="1.8.0" targetFramework="net45" />
+  <package id="Grpc" version="1.13.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.13.1" targetFramework="net45" />
+  <package id="Grpc.Tools" version="1.13.1" targetFramework="net45" />
   <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/HelloworldLegacyCsproj/GreeterClient/GreeterClient.csproj b/examples/csharp/HelloworldLegacyCsproj/GreeterClient/GreeterClient.csproj
index 470749a2b2b..2d2961d1289 100644
--- a/examples/csharp/HelloworldLegacyCsproj/GreeterClient/GreeterClient.csproj
+++ b/examples/csharp/HelloworldLegacyCsproj/GreeterClient/GreeterClient.csproj
@@ -36,15 +36,15 @@
       <HintPath>..\packages\Google.Protobuf.3.5.0\lib\net45\Google.Protobuf.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <HintPath>..\packages\Grpc.Core.1.8.0\lib\net45\Grpc.Core.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
       <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Grpc.Core">
+      <HintPath>..\packages\Grpc.Core.1.13.1\lib\net45\Grpc.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Program.cs" />
@@ -60,11 +60,5 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets'))" />
-  </Target>
+  <Import Project="..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/HelloworldLegacyCsproj/GreeterClient/packages.config b/examples/csharp/HelloworldLegacyCsproj/GreeterClient/packages.config
index 4b3684edfd3..da7dbcd8cb5 100644
--- a/examples/csharp/HelloworldLegacyCsproj/GreeterClient/packages.config
+++ b/examples/csharp/HelloworldLegacyCsproj/GreeterClient/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.5.0" targetFramework="net45" />
-  <package id="Grpc" version="1.8.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.8.0" targetFramework="net45" />
+  <package id="Grpc" version="1.13.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.13.1" targetFramework="net45" />
   <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
 </packages>
\ No newline at end of file
diff --git a/examples/csharp/HelloworldLegacyCsproj/GreeterServer/GreeterServer.csproj b/examples/csharp/HelloworldLegacyCsproj/GreeterServer/GreeterServer.csproj
index 82e2961cad2..1d47d705955 100644
--- a/examples/csharp/HelloworldLegacyCsproj/GreeterServer/GreeterServer.csproj
+++ b/examples/csharp/HelloworldLegacyCsproj/GreeterServer/GreeterServer.csproj
@@ -36,15 +36,15 @@
       <HintPath>..\packages\Google.Protobuf.3.5.0\lib\net45\Google.Protobuf.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="Grpc.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d754f35622e28bad, processorArchitecture=MSIL">
-      <HintPath>..\packages\Grpc.Core.1.8.0\lib\net45\Grpc.Core.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Interactive.Async, Version=3.0.1000.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
       <HintPath>..\packages\System.Interactive.Async.3.1.1\lib\net45\System.Interactive.Async.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Grpc.Core">
+      <HintPath>..\packages\Grpc.Core.1.13.1\lib\net45\Grpc.Core.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Program.cs" />
@@ -60,11 +60,5 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
-  <Import Project="..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Grpc.Core.1.8.0\build\net45\Grpc.Core.targets'))" />
-  </Target>
+  <Import Project="..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets" Condition="Exists('..\packages\Grpc.Core.1.13.1\build\net45\Grpc.Core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/examples/csharp/HelloworldLegacyCsproj/GreeterServer/packages.config b/examples/csharp/HelloworldLegacyCsproj/GreeterServer/packages.config
index 4b3684edfd3..da7dbcd8cb5 100644
--- a/examples/csharp/HelloworldLegacyCsproj/GreeterServer/packages.config
+++ b/examples/csharp/HelloworldLegacyCsproj/GreeterServer/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Google.Protobuf" version="3.5.0" targetFramework="net45" />
-  <package id="Grpc" version="1.8.0" targetFramework="net45" />
-  <package id="Grpc.Core" version="1.8.0" targetFramework="net45" />
+  <package id="Grpc" version="1.13.1" targetFramework="net45" />
+  <package id="Grpc.Core" version="1.13.1" targetFramework="net45" />
   <package id="System.Interactive.Async" version="3.1.1" targetFramework="net45" />
 </packages>
\ No newline at end of file