diff --git a/cc/proto/BUILD b/cc/proto/BUILD
new file mode 100644
index 0000000..3be6187
--- /dev/null
+++ b/cc/proto/BUILD
@@ -0,0 +1,4 @@
+package(default_visibility = ["//visibility:public"])
+
+# Toolchain type provided by proto_lang_toolchain rule and used by cc_proto_library
+toolchain_type(name = "toolchain_type")