diff --git a/.gitignore b/.gitignore
index 0728639..9dafb2d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,3 +26,6 @@ shadix-*.tar
 # Node / asset builds
 node_modules/
 assets/node_modules/
+
+# Vendored reference repos (not part of the package)
+vendor/