update Makefile.am
diff --git a/Makefile.am b/Makefile.am
index 5df0d53..755355f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -82,12 +82,15 @@
csharp/src/AddressBook/ListPeople.cs \
csharp/src/AddressBook/Program.cs \
csharp/src/AddressBook/SampleUsage.cs \
- csharp/src/Google.Protobuf.Benchmarks/SerializationConfig.cs \
- csharp/src/Google.Protobuf.Benchmarks/SerializationBenchmark.cs \
- csharp/src/Google.Protobuf.Benchmarks/Program.cs \
- csharp/src/Google.Protobuf.Benchmarks/Google.Protobuf.Benchmarks.csproj \
- csharp/src/Google.Protobuf.Benchmarks/Benchmarks.cs \
csharp/src/Google.Protobuf.Benchmarks/BenchmarkMessage1Proto3.cs \
+ csharp/src/Google.Protobuf.Benchmarks/Benchmarks.cs \
+ csharp/src/Google.Protobuf.Benchmarks/Google.Protobuf.Benchmarks.csproj \
+ csharp/src/Google.Protobuf.Benchmarks/Program.cs \
+ csharp/src/Google.Protobuf.Benchmarks/SerializationBenchmark.cs \
+ csharp/src/Google.Protobuf.Benchmarks/SerializationConfig.cs \
+ csharp/src/Google.Protobuf.Benchmarks/wrapper_benchmark_messages.proto \
+ csharp/src/Google.Protobuf.Benchmarks/WrapperBenchmark.cs \
+ csharp/src/Google.Protobuf.Benchmarks/WrapperBenchmarkMessages.cs \
csharp/src/Google.Protobuf.Conformance/Conformance.cs \
csharp/src/Google.Protobuf.Conformance/Google.Protobuf.Conformance.csproj \
csharp/src/Google.Protobuf.Conformance/Program.cs \