diff --git a/examples/csharp/helloworld/generate_protos.bat b/examples/csharp/helloworld/generate_protos.bat
index 8ba2c2e936fa779fd5ae833679967783a7673cbb..7f3654c8da0331f58671721d517bc7d9d27f515c 100644
--- a/examples/csharp/helloworld/generate_protos.bat
+++ b/examples/csharp/helloworld/generate_protos.bat
@@ -5,6 +5,6 @@ setlocal
 @rem enter this directory
 cd /d %~dp0
 
-packages\Google.Protobuf.3.0.0-alpha4\tools\protoc.exe -I../../protos --csharp_out Greeter  ../../protos/helloworld.proto --grpc_out Greeter --plugin=protoc-gen-grpc=packages\Grpc.Tools.0.12.0\tools\grpc_csharp_plugin.exe
+packages\Google.Protobuf.3.0.0-beta2\tools\protoc.exe -I../../protos --csharp_out Greeter  ../../protos/helloworld.proto --grpc_out Greeter --plugin=protoc-gen-grpc=packages\Grpc.Tools.0.13.0\tools\grpc_csharp_plugin.exe
 
 endlocal
\ No newline at end of file
diff --git a/examples/csharp/route_guide/generate_protos.bat b/examples/csharp/route_guide/generate_protos.bat
index fad63ef0aeba4904c3387d0c72e29e337fcb201d..d9cd021a917ce7993b4e9b0e22081be76a5a76b0 100644
--- a/examples/csharp/route_guide/generate_protos.bat
+++ b/examples/csharp/route_guide/generate_protos.bat
@@ -5,6 +5,6 @@ setlocal
 @rem enter this directory
 cd /d %~dp0
 
-packages\Google.Protobuf.3.0.0-alpha4\tools\protoc.exe -I../../protos --csharp_out RouteGuide  ../../protos/route_guide.proto --grpc_out RouteGuide --plugin=protoc-gen-grpc=packages\Grpc.Tools.0.12.0\tools\grpc_csharp_plugin.exe
+packages\Google.Protobuf.3.0.0-beta2\tools\protoc.exe -I../../protos --csharp_out RouteGuide  ../../protos/route_guide.proto --grpc_out RouteGuide --plugin=protoc-gen-grpc=packages\Grpc.Tools.0.13.0\tools\grpc_csharp_plugin.exe
 
 endlocal
\ No newline at end of file