diff --git a/tutorial/netstd/Server/Program.cs b/tutorial/netstd/Server/Program.cs
index 25e7dae..e1dab01 100644
--- a/tutorial/netstd/Server/Program.cs
+++ b/tutorial/netstd/Server/Program.cs
@@ -346,7 +346,7 @@
 
             public class Startup
             {
-                public Startup(IHostingEnvironment env)
+                public Startup(IWebHostEnvironment env)
                 {
                     var builder = new ConfigurationBuilder()
                         .SetBasePath(env.ContentRootPath)
@@ -366,7 +366,7 @@
                 }
 
                 // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-                public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
+                public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
                 {
                     app.UseMiddleware<THttpServerTransport>();
                 }
diff --git a/tutorial/netstd/Server/Server.csproj b/tutorial/netstd/Server/Server.csproj
index fbc2c03..454f332 100644
--- a/tutorial/netstd/Server/Server.csproj
+++ b/tutorial/netstd/Server/Server.csproj
@@ -19,7 +19,7 @@
   -->
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
     <AssemblyName>Server</AssemblyName>
     <PackageId>Server</PackageId>
     <OutputType>Exe</OutputType>