diff --git a/dc/topo/state/BUILD.bazel b/dc/topo/state/BUILD.bazel
new file mode 100644
index 0000000..892e302
--- /dev/null
+++ b/dc/topo/state/BUILD.bazel
@@ -0,0 +1,14 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["state.go"],
+    importpath = "code.hackerspace.pl/hscloud/dc/topo/state",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//dc/topo/proto:go_default_library",
+        "//go/pki:go_default_library",
+        "//proto/infra:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+    ],
+)