diff --git a/sandboxed_api/sandbox2/BUILD.bazel b/sandboxed_api/sandbox2/BUILD.bazel
index 5452122..96136da 100644
--- a/sandboxed_api/sandbox2/BUILD.bazel
+++ b/sandboxed_api/sandbox2/BUILD.bazel
@@ -24,6 +24,8 @@ package(default_visibility = [
 
 licenses(["notice"])  # Apache 2.0
 
+exports_files(["testdata/hostname"])
+
 cc_library(
     name = "bpfdisassembler",
     srcs = ["bpfdisassembler.cc"],