diff --git a/tests/lib.sh b/tests/lib.sh
index 4b4d908..16630c9 100644
--- a/tests/lib.sh
+++ b/tests/lib.sh
@@ -85,6 +85,7 @@
   copy_directory build/blueprint
   copy_directory build/soong
   copy_directory build/make/tools/rbcrun
+  copy_directory prebuilts/bazel/common/proto
 
   symlink_directory prebuilts/sdk
   symlink_directory prebuilts/go