diff --git a/metropolis/proto/BUILD b/metropolis/proto/BUILD
new file mode 100644
index 0000000..45aa830
--- /dev/null
+++ b/metropolis/proto/BUILD
@@ -0,0 +1,9 @@
+load("//build/proto_docs:proto_docs.bzl", "proto_docs")
+
+proto_docs(
+    name = "docs",
+    protos = [
+        "//metropolis/proto/api:api_proto",
+        "//metropolis/proto/common:common_proto",
+    ],
+)