diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..f0957c31
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+packages/grpc-js-xds/src/generated/** linguist-generated
+packages/grpc-js-xds/interop/generated/** linguist-generated