diff --git a/.gitignore b/.gitignore
index affc17e..c8c1061 100644
--- a/.gitignore
+++ b/.gitignore
@@ -89,6 +89,7 @@
 /lib/cpp/test/Benchmark
 /lib/cpp/test/AllProtocolsTest
 /lib/cpp/test/DebugProtoTest
+/lib/cpp/test/DenseProtoTest
 /lib/cpp/test/EnumTest
 /lib/cpp/test/JSONProtoTest
 /lib/cpp/test/OptionalRequiredTest