diff --git a/root.bp b/root.bp
index 8b3b71fa8..d98bc21ee 100644
--- a/root.bp
+++ b/root.bp
@@ -31,4 +31,5 @@ optional_subdirs = [
     "system/*",
     "system/tools/*",
     "test/vts",
+    "vendor/*/*",
 ]