diff --git a/osbase/build/kconfig-patcher/BUILD.bazel b/osbase/build/kconfig-patcher/BUILD.bazel
new file mode 100644
index 0000000..59ee391
--- /dev/null
+++ b/osbase/build/kconfig-patcher/BUILD.bazel
@@ -0,0 +1,23 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library", "go_test")
+
+go_library(
+    name = "kconfig-patcher_lib",
+    srcs = ["main.go"],
+    importpath = "source.monogon.dev/osbase/build/kconfig-patcher",
+    visibility = ["//visibility:private"],
+)
+
+go_binary(
+    name = "kconfig-patcher",
+    embed = [":kconfig-patcher_lib"],
+    visibility = [
+        "//metropolis/node:__pkg__",
+        "//osbase/test/ktest:__pkg__",
+    ],
+)
+
+go_test(
+    name = "kconfig-patcher_test",
+    srcs = ["main_test.go"],
+    embed = [":kconfig-patcher_lib"],
+)