diff --git a/osbase/supervisor/BUILD.bazel b/osbase/supervisor/BUILD.bazel
new file mode 100644
index 0000000..12263ff
--- /dev/null
+++ b/osbase/supervisor/BUILD.bazel
@@ -0,0 +1,29 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "supervisor",
+    srcs = [
+        "supervisor.go",
+        "supervisor_node.go",
+        "supervisor_processor.go",
+        "supervisor_support.go",
+        "supervisor_testhelpers.go",
+    ],
+    importpath = "source.monogon.dev/osbase/supervisor",
+    # TODO(#189): move supervisor to //go
+    visibility = ["//visibility:public"],
+    deps = [
+        "//osbase/logtree",
+        "@com_github_cenkalti_backoff_v4//:backoff",
+        "@org_golang_google_grpc//:go_default_library",
+    ],
+)
+
+go_test(
+    name = "supervisor_test",
+    srcs = ["supervisor_test.go"],
+    embed = [":supervisor"],
+    # TODO: https://github.com/monogon-dev/monogon/issues/131
+    flaky = True,
+    deps = ["//osbase/logtree"],
+)