diff --git a/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj b/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj
new file mode 100644
index 0000000..4f37c5e
--- /dev/null
+++ b/csharp/src/Google.Protobuf.Test/Google.Protobuf.Test.csproj
@@ -0,0 +1,143 @@
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