diff --git a/metropolis/pkg/logtree/BUILD.bazel b/metropolis/pkg/logtree/BUILD.bazel
new file mode 100644
index 0000000..bb07e99
--- /dev/null
+++ b/metropolis/pkg/logtree/BUILD.bazel
@@ -0,0 +1,32 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "journal.go",
+        "journal_entry.go",
+        "journal_subscriber.go",
+        "leveled.go",
+        "leveled_payload.go",
+        "logtree.go",
+        "logtree_access.go",
+        "logtree_entry.go",
+        "logtree_publisher.go",
+    ],
+    importpath = "git.monogon.dev/source/nexantic.git/metropolis/pkg/logtree",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//metropolis/pkg/logbuffer:go_default_library",
+        "//metropolis/proto/api:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "journal_test.go",
+        "logtree_test.go",
+    ],
+    embed = [":go_default_library"],
+)