diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..ea5d758
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+GlassVPN/SwiftSocket/** linguist-vendored
+GlassVPN/robbiehanson-CocoaAsyncSocket/** linguist-vendored
+GlassVPN/zhuhaow-NEKit/** linguist-vendored
+GlassVPN/zhuhaow-Resolver/** linguist-vendored