diff --git a/external/.gitignore b/external/.gitignore
index 26aea084cc10409ca199b0739180e8f877b04157..732dd15370edb746477f1fc066877aaa4e0a8f25 100644
--- a/external/.gitignore
+++ b/external/.gitignore
@@ -12,3 +12,4 @@ googletest
 yaml-cpp/
 xpu/
 GSL
+bba