diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..77e90f3
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+csbindgen-tests/**  linguist-vendored
+dotnet-sandbox/**   linguist-vendored
diff --git a/vendor.yml b/vendor.yml
deleted file mode 100644
index 7d39dc5..0000000
--- a/vendor.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-# https://github.com/github/linguist/blob/master/docs/overrides.md#vendored-code
-- csbindgen-tests/**
-- dotnet-sandbox/**