diff --git a/root.bp b/root.bp
index 58f4f107a..a1b1f6bf3 100644
--- a/root.bp
+++ b/root.bp
@@ -31,5 +31,6 @@ optional_subdirs = [
     "system/*",
     "system/tools/*",
     "test/vts",
+    "test/vts-testcase/*",
     "vendor/*/*",
 ]