diff --git a/examples/csharp/Helloworld/Greeter/Greeter.csproj b/examples/csharp/Helloworld/Greeter/Greeter.csproj
index 1ca821320cd..eba262565d7 100644
--- a/examples/csharp/Helloworld/Greeter/Greeter.csproj
+++ b/examples/csharp/Helloworld/Greeter/Greeter.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>Greeter</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>Greeter</AssemblyName>
     <PackageId>Greeter</PackageId>
diff --git a/examples/csharp/Helloworld/GreeterClient/GreeterClient.csproj b/examples/csharp/Helloworld/GreeterClient/GreeterClient.csproj
index d1ed0404118..24a89d58c55 100644
--- a/examples/csharp/Helloworld/GreeterClient/GreeterClient.csproj
+++ b/examples/csharp/Helloworld/GreeterClient/GreeterClient.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>GreeterClient</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>GreeterClient</AssemblyName>
     <OutputType>Exe</OutputType>
diff --git a/examples/csharp/Helloworld/GreeterServer/GreeterServer.csproj b/examples/csharp/Helloworld/GreeterServer/GreeterServer.csproj
index 159fbd8a23d..9ea1fa3817c 100644
--- a/examples/csharp/Helloworld/GreeterServer/GreeterServer.csproj
+++ b/examples/csharp/Helloworld/GreeterServer/GreeterServer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>GreeterServer</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>GreeterServer</AssemblyName>
     <OutputType>Exe</OutputType>
diff --git a/examples/csharp/Helloworld/README.md b/examples/csharp/Helloworld/README.md
index e6031794388..48711324262 100644
--- a/examples/csharp/Helloworld/README.md
+++ b/examples/csharp/Helloworld/README.md
@@ -12,7 +12,7 @@ which have been already added to the project for you.
 PREREQUISITES
 -------------
 
-- The [.NET Core SDK](https://www.microsoft.com/net/core) (version 2+ is recommended)
+- The [.NET Core SDK 2.1+](https://www.microsoft.com/net/core)
 
 You can also build the example directly using Visual Studio 2017, but it's not a requirement.
 
@@ -23,8 +23,6 @@ From the `examples/csharp/Helloworld` directory:
 
 - `dotnet build Greeter.sln`
 
-(if you're using dotnet SDK 1.x you need to run `dotnet restore Greeter.sln` first)
-
 Try it!
 -------
 
@@ -32,14 +30,14 @@ Try it!
 
   ```
   > cd GreeterServer
-  > dotnet run -f netcoreapp1.0
+  > dotnet run -f netcoreapp2.1
   ```
 
 - Run the client
 
   ```
   > cd GreeterClient
-  > dotnet run -f netcoreapp1.0
+  > dotnet run -f netcoreapp2.1
   ```
 
 Tutorial
diff --git a/examples/csharp/RouteGuide/RouteGuide/RouteGuide.csproj b/examples/csharp/RouteGuide/RouteGuide/RouteGuide.csproj
index e1c44ecf3c4..86346d1e149 100644
--- a/examples/csharp/RouteGuide/RouteGuide/RouteGuide.csproj
+++ b/examples/csharp/RouteGuide/RouteGuide/RouteGuide.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>RouteGuide</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>RouteGuide</AssemblyName>
     <PackageId>RouteGuide</PackageId>
diff --git a/examples/csharp/RouteGuide/RouteGuideClient/RouteGuideClient.csproj b/examples/csharp/RouteGuide/RouteGuideClient/RouteGuideClient.csproj
index 96cc204ba37..c6dadf082b8 100644
--- a/examples/csharp/RouteGuide/RouteGuideClient/RouteGuideClient.csproj
+++ b/examples/csharp/RouteGuide/RouteGuideClient/RouteGuideClient.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>RouteGuideClient</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>RouteGuideClient</AssemblyName>
     <OutputType>Exe</OutputType>
diff --git a/examples/csharp/RouteGuide/RouteGuideServer/RouteGuideServer.csproj b/examples/csharp/RouteGuide/RouteGuideServer/RouteGuideServer.csproj
index aa6315bf818..005c87ca0c2 100644
--- a/examples/csharp/RouteGuide/RouteGuideServer/RouteGuideServer.csproj
+++ b/examples/csharp/RouteGuide/RouteGuideServer/RouteGuideServer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <AssemblyTitle>RouteGuideServer</AssemblyTitle>
-    <TargetFrameworks>netcoreapp1.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
     <DebugType>portable</DebugType>
     <AssemblyName>RouteGuideServer</AssemblyName>
     <OutputType>Exe</OutputType>