diff --git a/.gitignore b/.gitignore
index 0d6abbfc6..223e0004b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -73,3 +73,6 @@ _upgrade_staging/
 
 # Research documents (local only)
 /todo/research/
+
+# ARM64 build intermediate directories
+**/ARM64/