diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..76e4ac9
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,5 @@
+* linguist-vendored
+* linguist-language=csharp
+
+# Normalize line endings.
+* text=auto