diff --git a/.gitattributes b/.gitattributes
index f9613a5..6038c0f 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,4 @@
 src/image/** linguist-vendored
+src/openlibm/** linguist-vendored
 src/tlse/** linguist-vendored
+src/truetype/** linguist-vendored