diff --git a/CAPI/.gitattributes b/CAPI/.gitattributes
new file mode 100644
index 0000000..6731563
--- /dev/null
+++ b/CAPI/.gitattributes
@@ -0,0 +1,5 @@
+tclap/** linguist-vendored
+
+proto/** linguist-generated
+
+*.h linguist-language=C++