diff --git a/CHANGES.md b/CHANGES.md
index 30622e5..e179a63 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,7 +4,7 @@
 
 ### Breaking Changes
 
-- [THRIFT-4990](https://issues.apache.org/jira/browse/THRIFT-4990) - Upgrade to .NET Core 3.0
+- [THRIFT-4990](https://issues.apache.org/jira/browse/THRIFT-4990) - Upgrade to .NET Core 3.1 (LTS)
 - [THRIFT-4981](https://issues.apache.org/jira/browse/THRIFT-4981) - Remove deprecated netcore bindings from the code base
 - [THRIFT-5006](https://issues.apache.org/jira/browse/THRIFT-5006) - Implement DEFAULT_MAX_LENGTH at TFramedTransport
 
diff --git a/build/docker/README.md b/build/docker/README.md
index e33c4e0..8c8be22 100644
--- a/build/docker/README.md
+++ b/build/docker/README.md
@@ -177,7 +177,6 @@
 | d         | 2.075.1       | 2.087.0       |       |
 | dart      | 2.0.0         | 2.4.0         |       |
 | delphi    |               |               | Not in CI |
-| dotnet    | 3.0           | 3.0           |       |
 | erlang    | 18.3          | 22.0          |       |
 | go        | 1.10.8        | 1.12.6        |       |
 | haskell   | 7.10.3        | 8.0.2         |       |
@@ -185,6 +184,7 @@
 | java      | 1.8.0_191     | 11.0.3        |       |
 | js        |               |               | Unsure how to look for version info? |
 | lua       |               | 5.2.4         | Lua 5.3: see THRIFT-4386 |
+| netstd    | 3.1           | 3.1           | LTS version |
 | nodejs    | 6.16.0        | 10.16.0       |       |
 | ocaml     |               | 4.05.0        | THRIFT-4517: ocaml 4.02.3 on xenial appears broken |
 | perl      | 5.22.1        | 5.26.1        |       |
diff --git a/build/docker/ubuntu-bionic/Dockerfile b/build/docker/ubuntu-bionic/Dockerfile
index d38901f..79d698f 100644
--- a/build/docker/ubuntu-bionic/Dockerfile
+++ b/build/docker/ubuntu-bionic/Dockerfile
@@ -130,7 +130,7 @@
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-3.0
+      dotnet-sdk-3.1
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/ubuntu-disco/Dockerfile b/build/docker/ubuntu-disco/Dockerfile
index b63fd58..95a2c78 100644
--- a/build/docker/ubuntu-disco/Dockerfile
+++ b/build/docker/ubuntu-disco/Dockerfile
@@ -130,7 +130,7 @@
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-3.0
+      dotnet-sdk-3.1
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/build/docker/ubuntu-xenial/Dockerfile b/build/docker/ubuntu-xenial/Dockerfile
index 714a80d..8df0887 100644
--- a/build/docker/ubuntu-xenial/Dockerfile
+++ b/build/docker/ubuntu-xenial/Dockerfile
@@ -127,7 +127,7 @@
 
 RUN apt-get install -y --no-install-recommends \
 `# dotnet core dependencies` \
-      dotnet-sdk-3.0
+      dotnet-sdk-3.1
 
 RUN apt-get install -y --no-install-recommends \
 `# Erlang dependencies` \
diff --git a/configure.ac b/configure.ac
index f11ab13..64283a8 100755
--- a/configure.ac
+++ b/configure.ac
@@ -505,7 +505,7 @@
 if test "$with_netstd" = "yes";  then
   AC_PATH_PROG([DOTNETCORE], [dotnet])
   if [[ -x "$DOTNETCORE" ]] ; then
-    AX_PROG_DOTNETCORE_VERSION( [3.0.0], have_netstd="yes", have_netstd="no")
+    AX_PROG_DOTNETCORE_VERSION( [3.1.0], have_netstd="yes", have_netstd="no")
   fi
 fi
 AM_CONDITIONAL(WITH_DOTNET, [test "$have_netstd" = "yes"])
diff --git a/lib/netstd/README.md b/lib/netstd/README.md
index 74f5ed8..d554e38 100644
--- a/lib/netstd/README.md
+++ b/lib/netstd/README.md
@@ -11,7 +11,7 @@
 - Build with scripts
 
 ## How to build on Unix/Linux
-- Ensure you have .NET Core SDK 3.0 installed, or use the [Ubuntu docker image](../../build/docker/README.md)
+- Ensure you have .NET Core SDK 3.1 (LTS) installed, or use the [Ubuntu docker image](../../build/docker/README.md)
 - Follow common automake build practice: `./ bootstrap && ./ configure && make`
 
 ## Known issues
diff --git a/lib/netstd/Tests/Thrift.IntegrationTests/Thrift.IntegrationTests.csproj b/lib/netstd/Tests/Thrift.IntegrationTests/Thrift.IntegrationTests.csproj
index c3cdc11..7c5639b 100644
--- a/lib/netstd/Tests/Thrift.IntegrationTests/Thrift.IntegrationTests.csproj
+++ b/lib/netstd/Tests/Thrift.IntegrationTests/Thrift.IntegrationTests.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Thrift.IntegrationTests</AssemblyName>
     <PackageId>Thrift.IntegrationTests</PackageId>
     <OutputType>Exe</OutputType>
@@ -32,11 +32,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CompareNETObjects" Version="4.58.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="1.4.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="1.4.0" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.5.3" />
+    <PackageReference Include="CompareNETObjects" Version="4.64.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.0.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.0.0" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Thrift\Thrift.csproj" />
diff --git a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
index 498191f..d2db348 100644
--- a/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
+++ b/lib/netstd/Tests/Thrift.PublicInterfaces.Compile.Tests/Thrift.PublicInterfaces.Compile.Tests.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Thrift.PublicInterfaces.Compile.Tests</AssemblyName>
     <PackageId>Thrift.PublicInterfaces.Compile.Tests</PackageId>
     <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
@@ -33,7 +33,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.5.3" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />
   </ItemGroup>
 
   <Target Name="PreBuild" BeforeTargets="_GenerateRestoreProjectSpec;Restore;Compile">
diff --git a/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj b/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
index b060182..20fdfe4 100644
--- a/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
+++ b/lib/netstd/Tests/Thrift.Tests/Thrift.Tests.csproj
@@ -18,14 +18,14 @@
     under the License.
   -->
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="CompareNETObjects" Version="4.58.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
-    <PackageReference Include="MSTest.TestAdapter" Version="1.4.0" />
-    <PackageReference Include="MSTest.TestFramework" Version="1.4.0" />
-    <PackageReference Include="NSubstitute" Version="4.0.0" />
+    <PackageReference Include="CompareNETObjects" Version="4.64.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.0.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.0.0" />
+    <PackageReference Include="NSubstitute" Version="4.2.1" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\Thrift\Thrift.csproj" />
diff --git a/lib/netstd/Thrift/Thrift.csproj b/lib/netstd/Thrift/Thrift.csproj
index 5d8a9c3..e40db00 100644
--- a/lib/netstd/Thrift/Thrift.csproj
+++ b/lib/netstd/Thrift/Thrift.csproj
@@ -44,16 +44,16 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="3.1.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="3.1.0" />
     <PackageReference Include="System.IO.Pipes" Version="[4.3,)" />
     <PackageReference Include="System.IO.Pipes.AccessControl" Version="4.5.1" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.2" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.7.0" />
     <PackageReference Include="System.Net.NameResolution" Version="[4.3,)" />
     <PackageReference Include="System.Net.Requests" Version="[4.3,)" />
     <PackageReference Include="System.Net.Security" Version="4.3.2" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.2" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.3" />
   </ItemGroup>
 
 </Project>
diff --git a/test/netstd/Client/Client.csproj b/test/netstd/Client/Client.csproj
index c406f17..4ed57cb 100644
--- a/test/netstd/Client/Client.csproj
+++ b/test/netstd/Client/Client.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Client</AssemblyName>
     <PackageId>Client</PackageId>
     <OutputType>Exe</OutputType>
@@ -31,9 +31,9 @@
     <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.2" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.7.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="[4.3,)" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.5.3" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />
     <PackageReference Include="System.Threading" Version="[4.3,)" />
   </ItemGroup>
   <ItemGroup>
diff --git a/test/netstd/Client/Program.cs b/test/netstd/Client/Program.cs
index 47dabd3..92000da 100644
--- a/test/netstd/Client/Program.cs
+++ b/test/netstd/Client/Program.cs
@@ -42,6 +42,7 @@
                     Console.WriteLine("The 'client' argument is no longer required.");
                     PrintHelp();
                     return -1;
+                case "--performance":
                 case "--performance-test":
                     return Tests.PerformanceTests.Execute();
                 case "--help":
diff --git a/test/netstd/README.md b/test/netstd/README.md
index 8350728..4ece059 100644
--- a/test/netstd/README.md
+++ b/test/netstd/README.md
@@ -6,7 +6,7 @@
 - ThriftTest - tests for Thrift library 
 
 # Reused components 
-- NET Core SDK 3.0
+- NET Core SDK 3.1 (LTS)
 
 # How to build on Windows
 - Get Thrift IDL compiler executable, add to some folder and add path to this folder into PATH variable
diff --git a/test/netstd/Server/Server.csproj b/test/netstd/Server/Server.csproj
index 5d33aa0..fa5ce46 100644
--- a/test/netstd/Server/Server.csproj
+++ b/test/netstd/Server/Server.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Server</AssemblyName>
     <PackageId>Server</PackageId>
     <OutputType>Exe</OutputType>
@@ -33,9 +33,9 @@
   <ItemGroup>
     <PackageReference Include="System.IO.Pipes" Version="4.3.0" />
     <PackageReference Include="System.IO.Pipes.AccessControl" Version="4.5.1" />
-    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.5.2" />
+    <PackageReference Include="System.Net.Http.WinHttpHandler" Version="4.7.0" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="[4.3,)" />
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.5.3" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />
     <PackageReference Include="System.Threading" Version="[4.3,)" />
   </ItemGroup>
   <ItemGroup>
@@ -47,6 +47,6 @@
     </Exec>
     <Exec Condition="Exists('$(PathToThrift)')" Command="&quot;$(PathToThrift)&quot; -out $(ProjectDir) -gen netstd:wcf,union,serial -r ./../../ThriftTest.thrift" />
     <Exec Condition="Exists('thrift')" Command="thrift -out $(ProjectDir) -gen netstd:wcf,union,serial -r ./../../ThriftTest.thrift" />
-    <Exec Condition="Exists('$(ProjectDir)/../../../compiler/cpp/thrift')" Command="$(ProjectDir)/../../../compiler/cpp/thrift -out $(ProjectDir) -gen netstd:wcf,union,serial,pascal -r ./../../ThriftTest.thrift" />
+    <Exec Condition="Exists('$(ProjectDir)/../../../compiler/cpp/thrift')" Command="$(ProjectDir)/../../../compiler/cpp/thrift -out $(ProjectDir) -gen netstd:wcf,union,serial -r ./../../ThriftTest.thrift" />
   </Target>
 </Project>
diff --git a/test/netstd/Server/TestServer.cs b/test/netstd/Server/TestServer.cs
index 493d89d..68461dc 100644
--- a/test/netstd/Server/TestServer.cs
+++ b/test/netstd/Server/TestServer.cs
@@ -254,20 +254,20 @@
 
             public Task<Xtruct> testStructAsync(Xtruct thing, CancellationToken cancellationToken)
             {
-                logger.Invoke("testStruct({{\"{0}\", {1}, {2}, {3}}})", thing.StringThing, thing.ByteThing, thing.I32Thing, thing.I64Thing);
+                logger.Invoke("testStruct({{\"{0}\", {1}, {2}, {3}}})", thing.String_thing, thing.Byte_thing, thing.I32_thing, thing.I64_thing);
                 return Task.FromResult(thing);
             }
 
             public Task<Xtruct2> testNestAsync(Xtruct2 nest, CancellationToken cancellationToken)
             {
-                var thing = nest.StructThing;
+                var thing = nest.Struct_thing;
                 logger.Invoke("testNest({{{0}, {{\"{1}\", {2}, {3}, {4}, {5}}}}})",
-                    nest.ByteThing,
-                    thing.StringThing,
-                    thing.ByteThing,
-                    thing.I32Thing,
-                    thing.I64Thing,
-                    nest.I32Thing);
+                    nest.Byte_thing,
+                    thing.String_thing,
+                    thing.Byte_thing,
+                    thing.I32_thing,
+                    thing.I64_thing,
+                    nest.I32_thing);
                 return Task.FromResult(nest);
             }
 
@@ -429,10 +429,10 @@
                 logger.Invoke("testMulti()");
 
                 var hello = new Xtruct(); ;
-                hello.StringThing = "Hello2";
-                hello.ByteThing = arg0;
-                hello.I32Thing = arg1;
-                hello.I64Thing = arg2;
+                hello.String_thing = "Hello2";
+                hello.Byte_thing = arg0;
+                hello.I32_thing = arg1;
+                hello.I64_thing = arg2;
                 return Task.FromResult(hello);
             }
 
@@ -473,12 +473,12 @@
                     var x = new Xception2
                     {
                         ErrorCode = 2002,
-                        StructThing = new Xtruct { StringThing = "This is an Xception2" }
+                        Struct_thing = new Xtruct { String_thing = "This is an Xception2" }
                     };
                     throw x;
                 }
 
-                var result = new Xtruct { StringThing = arg1 };
+                var result = new Xtruct { String_thing = arg1 };
                 return Task.FromResult(result);
             }
 
diff --git a/test/netstd/ThriftTest.sln b/test/netstd/ThriftTest.sln
index 6bd0855..352576e 100644
--- a/test/netstd/ThriftTest.sln
+++ b/test/netstd/ThriftTest.sln
@@ -4,9 +4,9 @@
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Thrift", "..\..\lib\netstd\Thrift\Thrift.csproj", "{C20EA2A9-7660-47DE-9A49-D1EF12FB2895}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Client", "Client\Client.csproj", "{21039F25-6ED7-4E80-A545-EBC93472EBD1}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Client", "Client\Client.csproj", "{21039F25-6ED7-4E80-A545-EBC93472EBD1}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{0C6E8685-F191-4479-9842-882A38961127}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Server", "Server\Server.csproj", "{0C6E8685-F191-4479-9842-882A38961127}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/tutorial/netstd/Client/Client.csproj b/tutorial/netstd/Client/Client.csproj
index 2abf53c..10d5040 100644
--- a/tutorial/netstd/Client/Client.csproj
+++ b/tutorial/netstd/Client/Client.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Client</AssemblyName>
     <PackageId>Client</PackageId>
     <OutputType>Exe</OutputType>
@@ -30,7 +30,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tutorial/netstd/Interfaces/Interfaces.csproj b/tutorial/netstd/Interfaces/Interfaces.csproj
index 4ebeb4f..c8b2bd8 100644
--- a/tutorial/netstd/Interfaces/Interfaces.csproj
+++ b/tutorial/netstd/Interfaces/Interfaces.csproj
@@ -33,7 +33,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.ServiceModel.Primitives" Version="4.5.3" />
+    <PackageReference Include="System.ServiceModel.Primitives" Version="4.7.0" />
   </ItemGroup>
 
   <Target Name="PreBuild" BeforeTargets="_GenerateRestoreProjectSpec;Restore;Compile">
diff --git a/tutorial/netstd/README.md b/tutorial/netstd/README.md
index 11fd541..297f4ee 100644
--- a/tutorial/netstd/README.md
+++ b/tutorial/netstd/README.md
@@ -1,8 +1,7 @@
 # Building of samples for different platforms 
 
-# Reused components 
-- NET Core Standard 3.0
-- NET Core App 3.0
+# Requirements
+- NET Core Standard 3.1 (LTS) runtime or SDK (see below for further info)
 
 # How to build
 - Download and install the latest .NET Core SDK for your platform https://dotnet.microsoft.com/download/dotnet-core
@@ -14,29 +13,26 @@
 
 # How to run 
 
-Notes: dotnet run supports passing arguments to app after -- symbols (https://docs.microsoft.com/en-us/dotnet/articles/core/tools/dotnet-run) - example: **dotnet run -- -h** will show help for app
+Depending on the platform, the name of the generated executables will vary. On Linux, it is just "client" or "server", on Windows it is "Client.exe" and "Server.exe". In the following, we use the abbreviated form "Client" and "Server".
 
 - build 
 - go to folder (Client/Server) 
-- run with specifying of correct parameters **dotnet run -tr:tcp -pr:multiplexed**, **dotnet run -help** (later, after migration to csproj and latest SDK will be possibility to use more usable form **dotnet run -- arguments**)
-
-#Notes
-- Possible adding additional platforms after stabilization of .NET Core (runtimes, platforms (Red Hat Linux, OpenSuse, etc.) 
+- run the generated executables: server first, then client from a second console
 
 #Known issues
 - In trace logging mode you can see some not important internal exceptions
 
 # Running of samples 
-Please install Thrift C# .NET Core library or copy sources and build them to correcly build and run samples 
+On machines that do not have the SDK installed, you need to install the NET Core runtime first. The SDK is only needed to build programs, otherwise the runtime is sufficient.
 
 # NetCore Server
 
 Usage: 
 
-    Server.exe -h
+    Server  -h
         will diplay help information 
 
-    Server.exe -tr:<transport> -pr:<protocol> 
+    Server  -tr:<transport> -pr:<protocol> 
         will run server with specified arguments (tcp transport and binary protocol by default)
 
 Options:
@@ -59,7 +55,7 @@
 		
 Sample:
 
-    Server.exe -tr:tcp
+    Server -tr:tcp
 
 **Remarks**:
 
@@ -72,10 +68,10 @@
 
 Usage: 
 
-    Client.exe -h
+    Client -h
         will diplay help information 
 
-    Client.exe -tr:<transport> -pr:<protocol> -mc:<numClients>
+    Client -tr:<transport> -pr:<protocol> -mc:<numClients>
         will run client with specified arguments (tcp transport and binary protocol by default)
 
 Options:
@@ -101,7 +97,7 @@
 
 Sample:
 
-    Client.exe -tr:tcp -pr:binary -mc:10
+    Client -tr:tcp -pr:binary -mc:10
 
 Remarks:
 
@@ -111,8 +107,8 @@
 
 # How to test communication between NetCore and Python
 
-* Generate code with the latest **thrift.exe** util
-* Ensure that **thrift.exe** util generated folder **gen-py** with generated code for Python
+* Generate code with the latest **thrift** utility
+* Ensure that **thrift** generated folder **gen-py** with generated code for Python exists
 * Create **client.py** and **server.py** from the code examples below and save them to the folder with previosly generated folder **gen-py**
 * Run netstd samples (client and server) and python samples (client and server)
 
diff --git a/tutorial/netstd/Server/Server.csproj b/tutorial/netstd/Server/Server.csproj
index 454f332..b3ff516 100644
--- a/tutorial/netstd/Server/Server.csproj
+++ b/tutorial/netstd/Server/Server.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Server</AssemblyName>
     <PackageId>Server</PackageId>
     <OutputType>Exe</OutputType>
@@ -38,7 +38,7 @@
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="2.2.1" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="3.1.0" />
   </ItemGroup>
 
 </Project>