diff --git a/osbase/event/BUILD.bazel b/osbase/event/BUILD.bazel
new file mode 100644
index 0000000..a8a2a0c
--- /dev/null
+++ b/osbase/event/BUILD.bazel
@@ -0,0 +1,9 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "event",
+    srcs = ["event.go"],
+    importpath = "source.monogon.dev/osbase/event",
+    visibility = ["//visibility:public"],
+    deps = ["//osbase/supervisor"],
+)